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Finding the Fourth Proportional to 71,073.86, 98,081.91 and 40,865.09

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Solution

The fourth proportional to 71,073.86, 98,081.91 and 40,865.09 is: 56,393.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,073.86 : 98,081.91 = 40,865.09 : x
  2. Step 2: Convert to fraction form
    71,073.86/98,081.91 = 40,865.09/x
  3. Step 3: Cross multiply
    71,073.86x = 98,081.91 × 40,865.09
  4. Step 4: Simplify right side
    71,073.86x = 4,008,125,589.11
  5. Step 5: Solve for x
    x = 4,008,125,589.11/71,073.86
  6. Step 6: Final answer
    x = 56,393.81

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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.