Home / 87,915.54-121,320.92-51,616.38

Finding the Fourth Proportional to 87,915.54, 121,320.92 and 51,616.38

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Solution

The fourth proportional to 87,915.54, 121,320.92 and 51,616.38 is: 71,229.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.54 : 121,320.92 = 51,616.38 : x
  2. Step 2: Convert to fraction form
    87,915.54/121,320.92 = 51,616.38/x
  3. Step 3: Cross multiply
    87,915.54x = 121,320.92 × 51,616.38
  4. Step 4: Simplify right side
    87,915.54x = 6,262,146,450.59
  5. Step 5: Solve for x
    x = 6,262,146,450.59/87,915.54
  6. Step 6: Final answer
    x = 71,229.12

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1.5x scale

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.