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Finding the Fourth Proportional to 71,133.96, 98,162.10 and 38,868.69

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Solution

The fourth proportional to 71,133.96, 98,162.10 and 38,868.69 is: 53,637.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,133.96 : 98,162.10 = 38,868.69 : x
  2. Step 2: Convert to fraction form
    71,133.96/98,162.10 = 38,868.69/x
  3. Step 3: Cross multiply
    71,133.96x = 98,162.10 × 38,868.69
  4. Step 4: Simplify right side
    71,133.96x = 3,815,432,234.65
  5. Step 5: Solve for x
    x = 3,815,432,234.65/71,133.96
  6. Step 6: Final answer
    x = 53,637.28

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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.