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Finding the Fourth Proportional to 101,489.96, 140,053.26 and 56,169.82

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Solution

The fourth proportional to 101,489.96, 140,053.26 and 56,169.82 is: 77,512.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,489.96 : 140,053.26 = 56,169.82 : x
  2. Step 2: Convert to fraction form
    101,489.96/140,053.26 = 56,169.82/x
  3. Step 3: Cross multiply
    101,489.96x = 140,053.26 × 56,169.82
  4. Step 4: Simplify right side
    101,489.96x = 7,866,766,404.61
  5. Step 5: Solve for x
    x = 7,866,766,404.61/101,489.96
  6. Step 6: Final answer
    x = 77,512.76

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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.