Home / 87,391.22-120,649.65-57,669.62

Finding the Fourth Proportional to 87,391.22, 120,649.65 and 57,669.62

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Solution

The fourth proportional to 87,391.22, 120,649.65 and 57,669.62 is: 79,616.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,391.22 : 120,649.65 = 57,669.62 : x
  2. Step 2: Convert to fraction form
    87,391.22/120,649.65 = 57,669.62/x
  3. Step 3: Cross multiply
    87,391.22x = 120,649.65 × 57,669.62
  4. Step 4: Simplify right side
    87,391.22x = 6,957,819,468.63
  5. Step 5: Solve for x
    x = 6,957,819,468.63/87,391.22
  6. Step 6: Final answer
    x = 79,616.92

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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.