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Finding the Fourth Proportional to 71,702.69, 107,555.45 and 26,108.80

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Solution

The fourth proportional to 71,702.69, 107,555.45 and 26,108.80 is: 39,163.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,702.69 : 107,555.45 = 26,108.80 : x
  2. Step 2: Convert to fraction form
    71,702.69/107,555.45 = 26,108.80/x
  3. Step 3: Cross multiply
    71,702.69x = 107,555.45 × 26,108.80
  4. Step 4: Simplify right side
    71,702.69x = 2,808,143,333.53
  5. Step 5: Solve for x
    x = 2,808,143,333.53/71,702.69
  6. Step 6: Final answer
    x = 39,163.71

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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.