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Finding the Fourth Proportional to 90,680.66, 125,007.42 and 63,371.96

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Solution

The fourth proportional to 90,680.66, 125,007.42 and 63,371.96 is: 87,361.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,680.66 : 125,007.42 = 63,371.96 : x
  2. Step 2: Convert to fraction form
    90,680.66/125,007.42 = 63,371.96/x
  3. Step 3: Cross multiply
    90,680.66x = 125,007.42 × 63,371.96
  4. Step 4: Simplify right side
    90,680.66x = 7,921,964,594.91
  5. Step 5: Solve for x
    x = 7,921,964,594.91/90,680.66
  6. Step 6: Final answer
    x = 87,361.13

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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.