Home / 87,663.72-120,976.48-47,377.38

Finding the Fourth Proportional to 87,663.72, 120,976.48 and 47,377.38

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Solution

The fourth proportional to 87,663.72, 120,976.48 and 47,377.38 is: 65,381.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,663.72 : 120,976.48 = 47,377.38 : x
  2. Step 2: Convert to fraction form
    87,663.72/120,976.48 = 47,377.38/x
  3. Step 3: Cross multiply
    87,663.72x = 120,976.48 × 47,377.38
  4. Step 4: Simplify right side
    87,663.72x = 5,731,549,176.91
  5. Step 5: Solve for x
    x = 5,731,549,176.91/87,663.72
  6. Step 6: Final answer
    x = 65,381.09

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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.