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Finding the Fourth Proportional to 87,608.80, 120,894.48 and 49,882.72

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Solution

The fourth proportional to 87,608.80, 120,894.48 and 49,882.72 is: 68,834.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,608.80 : 120,894.48 = 49,882.72 : x
  2. Step 2: Convert to fraction form
    87,608.80/120,894.48 = 49,882.72/x
  3. Step 3: Cross multiply
    87,608.80x = 120,894.48 × 49,882.72
  4. Step 4: Simplify right side
    87,608.80x = 6,030,545,495.39
  5. Step 5: Solve for x
    x = 6,030,545,495.39/87,608.80
  6. Step 6: Final answer
    x = 68,834.93

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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.