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Finding the Fourth Proportional to 52,129.28, 71,938.52 and 28,255.92

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Solution

The fourth proportional to 52,129.28, 71,938.52 and 28,255.92 is: 38,993.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,129.28 : 71,938.52 = 28,255.92 : x
  2. Step 2: Convert to fraction form
    52,129.28/71,938.52 = 28,255.92/x
  3. Step 3: Cross multiply
    52,129.28x = 71,938.52 × 28,255.92
  4. Step 4: Simplify right side
    52,129.28x = 2,032,689,066.04
  5. Step 5: Solve for x
    x = 2,032,689,066.04/52,129.28
  6. Step 6: Final answer
    x = 38,993.23

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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.