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Finding the Fourth Proportional to 89,872.20, 134,829.03 and 26,690.91

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Solution

The fourth proportional to 89,872.20, 134,829.03 and 26,690.91 is: 40,042.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,872.20 : 134,829.03 = 26,690.91 : x
  2. Step 2: Convert to fraction form
    89,872.20/134,829.03 = 26,690.91/x
  3. Step 3: Cross multiply
    89,872.20x = 134,829.03 × 26,690.91
  4. Step 4: Simplify right side
    89,872.20x = 3,598,709,505.12
  5. Step 5: Solve for x
    x = 3,598,709,505.12/89,872.20
  6. Step 6: Final answer
    x = 40,042.52

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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.