Home / 281,748.40-422,691.75-82,070.64

Finding the Fourth Proportional to 281,748.40, 422,691.75 and 82,070.64

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Solution

The fourth proportional to 281,748.40, 422,691.75 and 82,070.64 is: 123,126.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,748.40 : 422,691.75 = 82,070.64 : x
  2. Step 2: Convert to fraction form
    281,748.40/422,691.75 = 82,070.64/x
  3. Step 3: Cross multiply
    281,748.40x = 422,691.75 × 82,070.64
  4. Step 4: Simplify right side
    281,748.40x = 34,690,582,445.22
  5. Step 5: Solve for x
    x = 34,690,582,445.22/281,748.40
  6. Step 6: Final answer
    x = 123,126.10

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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.