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Finding the Fourth Proportional to 172,041.31, 258,061.97 and 53,722.79

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Solution

The fourth proportional to 172,041.31, 258,061.97 and 53,722.79 is: 80,584.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,041.31 : 258,061.97 = 53,722.79 : x
  2. Step 2: Convert to fraction form
    172,041.31/258,061.97 = 53,722.79/x
  3. Step 3: Cross multiply
    172,041.31x = 258,061.97 × 53,722.79
  4. Step 4: Simplify right side
    172,041.31x = 13,863,808,752.68
  5. Step 5: Solve for x
    x = 13,863,808,752.68/172,041.31
  6. Step 6: Final answer
    x = 80,584.19

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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.