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Finding the Fourth Proportional to 72,517.68, 108,773.28 and 30,386.88

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Solution

The fourth proportional to 72,517.68, 108,773.28 and 30,386.88 is: 45,578.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,517.68 : 108,773.28 = 30,386.88 : x
  2. Step 2: Convert to fraction form
    72,517.68/108,773.28 = 30,386.88/x
  3. Step 3: Cross multiply
    72,517.68x = 108,773.28 × 30,386.88
  4. Step 4: Simplify right side
    72,517.68x = 3,305,280,606.57
  5. Step 5: Solve for x
    x = 3,305,280,606.57/72,517.68
  6. Step 6: Final answer
    x = 45,578.96

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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.