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Finding the Fourth Proportional to 72,169.38, 108,253.26 and 25,411.32

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Solution

The fourth proportional to 72,169.38, 108,253.26 and 25,411.32 is: 38,116.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,169.38 : 108,253.26 = 25,411.32 : x
  2. Step 2: Convert to fraction form
    72,169.38/108,253.26 = 25,411.32/x
  3. Step 3: Cross multiply
    72,169.38x = 108,253.26 × 25,411.32
  4. Step 4: Simplify right side
    72,169.38x = 2,750,858,230.90
  5. Step 5: Solve for x
    x = 2,750,858,230.90/72,169.38
  6. Step 6: Final answer
    x = 38,116.69

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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.