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Finding the Fourth Proportional to 83,889.60, 125,834.40 and 50,647.20

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Solution

The fourth proportional to 83,889.60, 125,834.40 and 50,647.20 is: 75,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,889.60 : 125,834.40 = 50,647.20 : x
  2. Step 2: Convert to fraction form
    83,889.60/125,834.40 = 50,647.20/x
  3. Step 3: Cross multiply
    83,889.60x = 125,834.40 × 50,647.20
  4. Step 4: Simplify right side
    83,889.60x = 6,373,160,023.68
  5. Step 5: Solve for x
    x = 6,373,160,023.68/83,889.60
  6. Step 6: Final answer
    x = 75,970.80

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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.