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Finding the Fourth Proportional to 71,000.78, 98,013.26 and 45,169.96

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Solution

The fourth proportional to 71,000.78, 98,013.26 and 45,169.96 is: 62,355.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,000.78 : 98,013.26 = 45,169.96 : x
  2. Step 2: Convert to fraction form
    71,000.78/98,013.26 = 45,169.96/x
  3. Step 3: Cross multiply
    71,000.78x = 98,013.26 × 45,169.96
  4. Step 4: Simplify right side
    71,000.78x = 4,427,255,033.67
  5. Step 5: Solve for x
    x = 4,427,255,033.67/71,000.78
  6. Step 6: Final answer
    x = 62,355.02

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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.