Home / 30,487,306,393.17-42,073,618,266.27-18,281,998,651.68

Finding the Fourth Proportional to 30,487,306,393.17, 42,073,618,266.27 and 18,281,998,651.68

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Solution

The fourth proportional to 30,487,306,393.17, 42,073,618,266.27 and 18,281,998,651.68 is: 25,229,839,018.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,487,306,393.17 : 42,073,618,266.27 = 18,281,998,651.68 : x
  2. Step 2: Convert to fraction form
    30,487,306,393.17/42,073,618,266.27 = 18,281,998,651.68/x
  3. Step 3: Cross multiply
    30,487,306,393.17x = 42,073,618,266.27 × 18,281,998,651.68
  4. Step 4: Simplify right side
    30,487,306,393.17x = 769,189,832,415,247,073,280
  5. Step 5: Solve for x
    x = 769,189,832,415,247,073,280/30,487,306,393.17
  6. Step 6: Final answer
    x = 25,229,839,018.76

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Double scale
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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.