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Finding the Fourth Proportional to 80,259.78, 120,397.63 and 29,672.06

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Solution

The fourth proportional to 80,259.78, 120,397.63 and 29,672.06 is: 44,511.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,259.78 : 120,397.63 = 29,672.06 : x
  2. Step 2: Convert to fraction form
    80,259.78/120,397.63 = 29,672.06/x
  3. Step 3: Cross multiply
    80,259.78x = 120,397.63 × 29,672.06
  4. Step 4: Simplify right side
    80,259.78x = 3,572,445,928.03
  5. Step 5: Solve for x
    x = 3,572,445,928.03/80,259.78
  6. Step 6: Final answer
    x = 44,511.04

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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.