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Finding the Fourth Proportional to 71,566.47, 107,353.62 and 21,645.36

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Solution

The fourth proportional to 71,566.47, 107,353.62 and 21,645.36 is: 32,469.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,566.47 : 107,353.62 = 21,645.36 : x
  2. Step 2: Convert to fraction form
    71,566.47/107,353.62 = 21,645.36/x
  3. Step 3: Cross multiply
    71,566.47x = 107,353.62 × 21,645.36
  4. Step 4: Simplify right side
    71,566.47x = 2,323,707,752.20
  5. Step 5: Solve for x
    x = 2,323,707,752.20/71,566.47
  6. Step 6: Final answer
    x = 32,469.22

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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.