Home / 87,279.50-120,446.52-49,554.56

Finding the Fourth Proportional to 87,279.50, 120,446.52 and 49,554.56

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Solution

The fourth proportional to 87,279.50, 120,446.52 and 49,554.56 is: 68,385.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,279.50 : 120,446.52 = 49,554.56 : x
  2. Step 2: Convert to fraction form
    87,279.50/120,446.52 = 49,554.56/x
  3. Step 3: Cross multiply
    87,279.50x = 120,446.52 × 49,554.56
  4. Step 4: Simplify right side
    87,279.50x = 5,968,674,302.13
  5. Step 5: Solve for x
    x = 5,968,674,302.13/87,279.50
  6. Step 6: Final answer
    x = 68,385.75

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1.5x scale

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.