Home / 87,789.96-121,149.81-47,503.80

Finding the Fourth Proportional to 87,789.96, 121,149.81 and 47,503.80

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Solution

The fourth proportional to 87,789.96, 121,149.81 and 47,503.80 is: 65,555.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,789.96 : 121,149.81 = 47,503.80 : x
  2. Step 2: Convert to fraction form
    87,789.96/121,149.81 = 47,503.80/x
  3. Step 3: Cross multiply
    87,789.96x = 121,149.81 × 47,503.80
  4. Step 4: Simplify right side
    87,789.96x = 5,755,076,344.28
  5. Step 5: Solve for x
    x = 5,755,076,344.28/87,789.96
  6. Step 6: Final answer
    x = 65,555.06

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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.