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Finding the Fourth Proportional to 101,572.68, 140,104.98 and 63,781.32

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Solution

The fourth proportional to 101,572.68, 140,104.98 and 63,781.32 is: 87,977.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,572.68 : 140,104.98 = 63,781.32 : x
  2. Step 2: Convert to fraction form
    101,572.68/140,104.98 = 63,781.32/x
  3. Step 3: Cross multiply
    101,572.68x = 140,104.98 × 63,781.32
  4. Step 4: Simplify right side
    101,572.68x = 8,936,080,562.97
  5. Step 5: Solve for x
    x = 8,936,080,562.97/101,572.68
  6. Step 6: Final answer
    x = 87,977.21

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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.