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Finding the Fourth Proportional to 80,655.60, 120,886.20 and 41,192.40

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Solution

The fourth proportional to 80,655.60, 120,886.20 and 41,192.40 is: 61,738.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,655.60 : 120,886.20 = 41,192.40 : x
  2. Step 2: Convert to fraction form
    80,655.60/120,886.20 = 41,192.40/x
  3. Step 3: Cross multiply
    80,655.60x = 120,886.20 × 41,192.40
  4. Step 4: Simplify right side
    80,655.60x = 4,979,592,704.88
  5. Step 5: Solve for x
    x = 4,979,592,704.88/80,655.60
  6. Step 6: Final answer
    x = 61,738.96

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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.