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Finding the Fourth Proportional to 71,562.34, 98,760.48 and 39,731.77

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Solution

The fourth proportional to 71,562.34, 98,760.48 and 39,731.77 is: 54,832.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,562.34 : 98,760.48 = 39,731.77 : x
  2. Step 2: Convert to fraction form
    71,562.34/98,760.48 = 39,731.77/x
  3. Step 3: Cross multiply
    71,562.34x = 98,760.48 × 39,731.77
  4. Step 4: Simplify right side
    71,562.34x = 3,923,928,182.65
  5. Step 5: Solve for x
    x = 3,923,928,182.65/71,562.34
  6. Step 6: Final answer
    x = 54,832.31

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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.