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Finding the Fourth Proportional to 113,781.98, 170,676.62 and 38,899.10

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Solution

The fourth proportional to 113,781.98, 170,676.62 and 38,899.10 is: 58,349.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,781.98 : 170,676.62 = 38,899.10 : x
  2. Step 2: Convert to fraction form
    113,781.98/170,676.62 = 38,899.10/x
  3. Step 3: Cross multiply
    113,781.98x = 170,676.62 × 38,899.10
  4. Step 4: Simplify right side
    113,781.98x = 6,639,167,287.11
  5. Step 5: Solve for x
    x = 6,639,167,287.11/113,781.98
  6. Step 6: Final answer
    x = 58,349.90

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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.