Home / 48,638.40-72,763.20-42,136.80

Finding the Fourth Proportional to 48,638.40, 72,763.20 and 42,136.80

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Solution

The fourth proportional to 48,638.40, 72,763.20 and 42,136.80 is: 63,036.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,638.40 : 72,763.20 = 42,136.80 : x
  2. Step 2: Convert to fraction form
    48,638.40/72,763.20 = 42,136.80/x
  3. Step 3: Cross multiply
    48,638.40x = 72,763.20 × 42,136.80
  4. Step 4: Simplify right side
    48,638.40x = 3,066,008,405.76
  5. Step 5: Solve for x
    x = 3,066,008,405.76/48,638.40
  6. Step 6: Final answer
    x = 63,036.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.