Home / 87,926.30-121,330.90-49,689.17

Finding the Fourth Proportional to 87,926.30, 121,330.90 and 49,689.17

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Solution

The fourth proportional to 87,926.30, 121,330.90 and 49,689.17 is: 68,566.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,926.30 : 121,330.90 = 49,689.17 : x
  2. Step 2: Convert to fraction form
    87,926.30/121,330.90 = 49,689.17/x
  3. Step 3: Cross multiply
    87,926.30x = 121,330.90 × 49,689.17
  4. Step 4: Simplify right side
    87,926.30x = 6,028,830,861.25
  5. Step 5: Solve for x
    x = 6,028,830,861.25/87,926.30
  6. Step 6: Final answer
    x = 68,566.87

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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.