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Finding the Fourth Proportional to 101,781.79, 140,459.65 and 55,841.13

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Solution

The fourth proportional to 101,781.79, 140,459.65 and 55,841.13 is: 77,061.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,781.79 : 140,459.65 = 55,841.13 : x
  2. Step 2: Convert to fraction form
    101,781.79/140,459.65 = 55,841.13/x
  3. Step 3: Cross multiply
    101,781.79x = 140,459.65 × 55,841.13
  4. Step 4: Simplify right side
    101,781.79x = 7,843,425,435.80
  5. Step 5: Solve for x
    x = 7,843,425,435.80/101,781.79
  6. Step 6: Final answer
    x = 77,061.19

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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.