Home / 87,174.72-120,312-49,461.12

Finding the Fourth Proportional to 87,174.72, 120,312 and 49,461.12

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Solution

The fourth proportional to 87,174.72, 120,312 and 49,461.12 is: 68,262.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,174.72 : 120,312 = 49,461.12 : x
  2. Step 2: Convert to fraction form
    87,174.72/120,312 = 49,461.12/x
  3. Step 3: Cross multiply
    87,174.72x = 120,312 × 49,461.12
  4. Step 4: Simplify right side
    87,174.72x = 5,950,766,269.44
  5. Step 5: Solve for x
    x = 5,950,766,269.44/87,174.72
  6. Step 6: Final answer
    x = 68,262.52

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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.