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Finding the Fourth Proportional to 71,510.31, 107,223.66 and 21,575.43

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Solution

The fourth proportional to 71,510.31, 107,223.66 and 21,575.43 is: 32,350.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,510.31 : 107,223.66 = 21,575.43 : x
  2. Step 2: Convert to fraction form
    71,510.31/107,223.66 = 21,575.43/x
  3. Step 3: Cross multiply
    71,510.31x = 107,223.66 × 21,575.43
  4. Step 4: Simplify right side
    71,510.31x = 2,313,396,570.67
  5. Step 5: Solve for x
    x = 2,313,396,570.67/71,510.31
  6. Step 6: Final answer
    x = 32,350.53

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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.