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Finding the Fourth Proportional to 113,687.68, 170,531.40 and 30,581.68

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Solution

The fourth proportional to 113,687.68, 170,531.40 and 30,581.68 is: 45,872.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,687.68 : 170,531.40 = 30,581.68 : x
  2. Step 2: Convert to fraction form
    113,687.68/170,531.40 = 30,581.68/x
  3. Step 3: Cross multiply
    113,687.68x = 170,531.40 × 30,581.68
  4. Step 4: Simplify right side
    113,687.68x = 5,215,136,704.75
  5. Step 5: Solve for x
    x = 5,215,136,704.75/113,687.68
  6. Step 6: Final answer
    x = 45,872.49

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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.