Home / 81,397.48-121,937.82-60,011.24

Finding the Fourth Proportional to 81,397.48, 121,937.82 and 60,011.24

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Solution

The fourth proportional to 81,397.48, 121,937.82 and 60,011.24 is: 89,900.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,397.48 : 121,937.82 = 60,011.24 : x
  2. Step 2: Convert to fraction form
    81,397.48/121,937.82 = 60,011.24/x
  3. Step 3: Cross multiply
    81,397.48x = 121,937.82 × 60,011.24
  4. Step 4: Simplify right side
    81,397.48x = 7,317,639,781.10
  5. Step 5: Solve for x
    x = 7,317,639,781.10/81,397.48
  6. Step 6: Final answer
    x = 89,900.08

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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.