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Finding the Fourth Proportional to 80,479.68, 120,731.04 and 25,080

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Solution

The fourth proportional to 80,479.68, 120,731.04 and 25,080 is: 37,623.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,479.68 : 120,731.04 = 25,080 : x
  2. Step 2: Convert to fraction form
    80,479.68/120,731.04 = 25,080/x
  3. Step 3: Cross multiply
    80,479.68x = 120,731.04 × 25,080
  4. Step 4: Simplify right side
    80,479.68x = 3,027,934,483.20
  5. Step 5: Solve for x
    x = 3,027,934,483.20/80,479.68
  6. Step 6: Final answer
    x = 37,623.59

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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.