Home / 62,781.12-86,646.24-40,489.92

Finding the Fourth Proportional to 62,781.12, 86,646.24 and 40,489.92

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Solution

The fourth proportional to 62,781.12, 86,646.24 and 40,489.92 is: 55,881.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,781.12 : 86,646.24 = 40,489.92 : x
  2. Step 2: Convert to fraction form
    62,781.12/86,646.24 = 40,489.92/x
  3. Step 3: Cross multiply
    62,781.12x = 86,646.24 × 40,489.92
  4. Step 4: Simplify right side
    62,781.12x = 3,508,299,325.90
  5. Step 5: Solve for x
    x = 3,508,299,325.90/62,781.12
  6. Step 6: Final answer
    x = 55,881.44

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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.