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Finding the Fourth Proportional to 87,801.92, 120,923.52 and 75,861.44

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Solution

The fourth proportional to 87,801.92, 120,923.52 and 75,861.44 is: 104,478.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,801.92 : 120,923.52 = 75,861.44 : x
  2. Step 2: Convert to fraction form
    87,801.92/120,923.52 = 75,861.44/x
  3. Step 3: Cross multiply
    87,801.92x = 120,923.52 × 75,861.44
  4. Step 4: Simplify right side
    87,801.92x = 9,173,432,357.07
  5. Step 5: Solve for x
    x = 9,173,432,357.07/87,801.92
  6. Step 6: Final answer
    x = 104,478.72

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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.