Home / 87,902.64-121,316.28-49,663.80

Finding the Fourth Proportional to 87,902.64, 121,316.28 and 49,663.80

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Solution

The fourth proportional to 87,902.64, 121,316.28 and 49,663.80 is: 68,542.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,902.64 : 121,316.28 = 49,663.80 : x
  2. Step 2: Convert to fraction form
    87,902.64/121,316.28 = 49,663.80/x
  3. Step 3: Cross multiply
    87,902.64x = 121,316.28 × 49,663.80
  4. Step 4: Simplify right side
    87,902.64x = 6,025,027,466.66
  5. Step 5: Solve for x
    x = 6,025,027,466.66/87,902.64
  6. Step 6: Final answer
    x = 68,542.05

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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.