Home / 87,418.95-120,636.86-49,175.61

Finding the Fourth Proportional to 87,418.95, 120,636.86 and 49,175.61

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Solution

The fourth proportional to 87,418.95, 120,636.86 and 49,175.61 is: 67,861.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,418.95 : 120,636.86 = 49,175.61 : x
  2. Step 2: Convert to fraction form
    87,418.95/120,636.86 = 49,175.61/x
  3. Step 3: Cross multiply
    87,418.95x = 120,636.86 × 49,175.61
  4. Step 4: Simplify right side
    87,418.95x = 5,932,390,933.11
  5. Step 5: Solve for x
    x = 5,932,390,933.11/87,418.95
  6. Step 6: Final answer
    x = 67,861.61

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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.