Home / 87,775.72-121,141.50-67,616.44

Finding the Fourth Proportional to 87,775.72, 121,141.50 and 67,616.44

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Solution

The fourth proportional to 87,775.72, 121,141.50 and 67,616.44 is: 93,319.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,775.72 : 121,141.50 = 67,616.44 : x
  2. Step 2: Convert to fraction form
    87,775.72/121,141.50 = 67,616.44/x
  3. Step 3: Cross multiply
    87,775.72x = 121,141.50 × 67,616.44
  4. Step 4: Simplify right side
    87,775.72x = 8,191,156,966.26
  5. Step 5: Solve for x
    x = 8,191,156,966.26/87,775.72
  6. Step 6: Final answer
    x = 93,319.17

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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.