Home / 87,930.64-121,246.15-63,683.65

Finding the Fourth Proportional to 87,930.64, 121,246.15 and 63,683.65

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Solution

The fourth proportional to 87,930.64, 121,246.15 and 63,683.65 is: 87,812.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,930.64 : 121,246.15 = 63,683.65 : x
  2. Step 2: Convert to fraction form
    87,930.64/121,246.15 = 63,683.65/x
  3. Step 3: Cross multiply
    87,930.64x = 121,246.15 × 63,683.65
  4. Step 4: Simplify right side
    87,930.64x = 7,721,397,380.45
  5. Step 5: Solve for x
    x = 7,721,397,380.45/87,930.64
  6. Step 6: Final answer
    x = 87,812.36

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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.