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Finding the Fourth Proportional to 87,760.88, 121,060.80 and 53,785.83

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Solution

The fourth proportional to 87,760.88, 121,060.80 and 53,785.83 is: 74,194.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,760.88 : 121,060.80 = 53,785.83 : x
  2. Step 2: Convert to fraction form
    87,760.88/121,060.80 = 53,785.83/x
  3. Step 3: Cross multiply
    87,760.88x = 121,060.80 × 53,785.83
  4. Step 4: Simplify right side
    87,760.88x = 6,511,355,608.46
  5. Step 5: Solve for x
    x = 6,511,355,608.46/87,760.88
  6. Step 6: Final answer
    x = 74,194.28

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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.