Home / 87,423-120,642.60-49,182.44

Finding the Fourth Proportional to 87,423, 120,642.60 and 49,182.44

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Solution

The fourth proportional to 87,423, 120,642.60 and 49,182.44 is: 67,871.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,423 : 120,642.60 = 49,182.44 : x
  2. Step 2: Convert to fraction form
    87,423/120,642.60 = 49,182.44/x
  3. Step 3: Cross multiply
    87,423x = 120,642.60 × 49,182.44
  4. Step 4: Simplify right side
    87,423x = 5,933,497,435.94
  5. Step 5: Solve for x
    x = 5,933,497,435.94/87,423
  6. Step 6: Final answer
    x = 67,871.13

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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.