Home / 87,913.80-121,376.07-67,732.38

Finding the Fourth Proportional to 87,913.80, 121,376.07 and 67,732.38

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Solution

The fourth proportional to 87,913.80, 121,376.07 and 67,732.38 is: 93,513.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,913.80 : 121,376.07 = 67,732.38 : x
  2. Step 2: Convert to fraction form
    87,913.80/121,376.07 = 67,732.38/x
  3. Step 3: Cross multiply
    87,913.80x = 121,376.07 × 67,732.38
  4. Step 4: Simplify right side
    87,913.80x = 8,221,090,096.15
  5. Step 5: Solve for x
    x = 8,221,090,096.15/87,913.80
  6. Step 6: Final answer
    x = 93,513.08

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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.