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Finding the Fourth Proportional to 87,657.60, 131,486.40 and 50,332.80

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Solution

The fourth proportional to 87,657.60, 131,486.40 and 50,332.80 is: 75,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,657.60 : 131,486.40 = 50,332.80 : x
  2. Step 2: Convert to fraction form
    87,657.60/131,486.40 = 50,332.80/x
  3. Step 3: Cross multiply
    87,657.60x = 131,486.40 × 50,332.80
  4. Step 4: Simplify right side
    87,657.60x = 6,618,078,673.92
  5. Step 5: Solve for x
    x = 6,618,078,673.92/87,657.60
  6. Step 6: Final answer
    x = 75,499.20

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1.5x scale

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.