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Finding the Fourth Proportional to 61,704.12, 85,147.02 and 34,842.90

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Solution

The fourth proportional to 61,704.12, 85,147.02 and 34,842.90 is: 48,080.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,704.12 : 85,147.02 = 34,842.90 : x
  2. Step 2: Convert to fraction form
    61,704.12/85,147.02 = 34,842.90/x
  3. Step 3: Cross multiply
    61,704.12x = 85,147.02 × 34,842.90
  4. Step 4: Simplify right side
    61,704.12x = 2,966,769,103.16
  5. Step 5: Solve for x
    x = 2,966,769,103.16/61,704.12
  6. Step 6: Final answer
    x = 48,080.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.