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Finding the Fourth Proportional to 80,155.80, 110,580.21 and 48,306.60

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Solution

The fourth proportional to 80,155.80, 110,580.21 and 48,306.60 is: 66,642.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,155.80 : 110,580.21 = 48,306.60 : x
  2. Step 2: Convert to fraction form
    80,155.80/110,580.21 = 48,306.60/x
  3. Step 3: Cross multiply
    80,155.80x = 110,580.21 × 48,306.60
  4. Step 4: Simplify right side
    80,155.80x = 5,341,753,972.39
  5. Step 5: Solve for x
    x = 5,341,753,972.39/80,155.80
  6. Step 6: Final answer
    x = 66,642.14

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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.