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Finding the Fourth Proportional to 80,454.76, 120,690.78 and 33,712.36

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Solution

The fourth proportional to 80,454.76, 120,690.78 and 33,712.36 is: 50,572.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454.76 : 120,690.78 = 33,712.36 : x
  2. Step 2: Convert to fraction form
    80,454.76/120,690.78 = 33,712.36/x
  3. Step 3: Cross multiply
    80,454.76x = 120,690.78 × 33,712.36
  4. Step 4: Simplify right side
    80,454.76x = 4,068,771,024.04
  5. Step 5: Solve for x
    x = 4,068,771,024.04/80,454.76
  6. Step 6: Final answer
    x = 50,572.16

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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.