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Finding the Fourth Proportional to 87,304.50, 120,474.54 and 51,486.30

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Solution

The fourth proportional to 87,304.50, 120,474.54 and 51,486.30 is: 71,047.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,304.50 : 120,474.54 = 51,486.30 : x
  2. Step 2: Convert to fraction form
    87,304.50/120,474.54 = 51,486.30/x
  3. Step 3: Cross multiply
    87,304.50x = 120,474.54 × 51,486.30
  4. Step 4: Simplify right side
    87,304.50x = 6,202,788,308.80
  5. Step 5: Solve for x
    x = 6,202,788,308.80/87,304.50
  6. Step 6: Final answer
    x = 71,047.75

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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.