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Finding the Fourth Proportional to 80,892.80, 121,339.20 and 41,436.80

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Solution

The fourth proportional to 80,892.80, 121,339.20 and 41,436.80 is: 62,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,892.80 : 121,339.20 = 41,436.80 : x
  2. Step 2: Convert to fraction form
    80,892.80/121,339.20 = 41,436.80/x
  3. Step 3: Cross multiply
    80,892.80x = 121,339.20 × 41,436.80
  4. Step 4: Simplify right side
    80,892.80x = 5,027,908,162.56
  5. Step 5: Solve for x
    x = 5,027,908,162.56/80,892.80
  6. Step 6: Final answer
    x = 62,155.20

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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.