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Finding the Fourth Proportional to 87,974.80, 131,875.80 and 43,608.40

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Solution

The fourth proportional to 87,974.80, 131,875.80 and 43,608.40 is: 65,369.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,974.80 : 131,875.80 = 43,608.40 : x
  2. Step 2: Convert to fraction form
    87,974.80/131,875.80 = 43,608.40/x
  3. Step 3: Cross multiply
    87,974.80x = 131,875.80 × 43,608.40
  4. Step 4: Simplify right side
    87,974.80x = 5,750,892,636.72
  5. Step 5: Solve for x
    x = 5,750,892,636.72/87,974.80
  6. Step 6: Final answer
    x = 65,369.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.