Home / 30,487,306,378.92-42,073,618,246.61-18,281,998,637.43

Finding the Fourth Proportional to 30,487,306,378.92, 42,073,618,246.61 and 18,281,998,637.43

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Solution

The fourth proportional to 30,487,306,378.92, 42,073,618,246.61 and 18,281,998,637.43 is: 25,229,838,999.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,487,306,378.92 : 42,073,618,246.61 = 18,281,998,637.43 : x
  2. Step 2: Convert to fraction form
    30,487,306,378.92/42,073,618,246.61 = 18,281,998,637.43/x
  3. Step 3: Cross multiply
    30,487,306,378.92x = 42,073,618,246.61 × 18,281,998,637.43
  4. Step 4: Simplify right side
    30,487,306,378.92x = 769,189,831,456,182,632,448
  5. Step 5: Solve for x
    x = 769,189,831,456,182,632,448/30,487,306,378.92
  6. Step 6: Final answer
    x = 25,229,838,999.09

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Find fourth proportional to 30,487,306,379.92, 42,073,618,247.99 and 18,281,998,638.43
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.