Home / 80,949.60-111,697.02-45,138.60

Finding the Fourth Proportional to 80,949.60, 111,697.02 and 45,138.60

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Solution

The fourth proportional to 80,949.60, 111,697.02 and 45,138.60 is: 62,283.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,949.60 : 111,697.02 = 45,138.60 : x
  2. Step 2: Convert to fraction form
    80,949.60/111,697.02 = 45,138.60/x
  3. Step 3: Cross multiply
    80,949.60x = 111,697.02 × 45,138.60
  4. Step 4: Simplify right side
    80,949.60x = 5,041,847,106.97
  5. Step 5: Solve for x
    x = 5,041,847,106.97/80,949.60
  6. Step 6: Final answer
    x = 62,283.78

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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.