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Finding the Fourth Proportional to 87,248.97, 130,912.34 and 45,686.25

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Solution

The fourth proportional to 87,248.97, 130,912.34 and 45,686.25 is: 68,549.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,248.97 : 130,912.34 = 45,686.25 : x
  2. Step 2: Convert to fraction form
    87,248.97/130,912.34 = 45,686.25/x
  3. Step 3: Cross multiply
    87,248.97x = 130,912.34 × 45,686.25
  4. Step 4: Simplify right side
    87,248.97x = 5,980,893,664.89
  5. Step 5: Solve for x
    x = 5,980,893,664.89/87,248.97
  6. Step 6: Final answer
    x = 68,549.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.