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Finding the Fourth Proportional to 87,309.44, 120,487.04 and 47,565.44

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Solution

The fourth proportional to 87,309.44, 120,487.04 and 47,565.44 is: 65,640.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,309.44 : 120,487.04 = 47,565.44 : x
  2. Step 2: Convert to fraction form
    87,309.44/120,487.04 = 47,565.44/x
  3. Step 3: Cross multiply
    87,309.44x = 120,487.04 × 47,565.44
  4. Step 4: Simplify right side
    87,309.44x = 5,731,019,071.90
  5. Step 5: Solve for x
    x = 5,731,019,071.90/87,309.44
  6. Step 6: Final answer
    x = 65,640.31

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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.