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Finding the Fourth Proportional to 172,359.72, 258,532.06 and 54,028.36

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Solution

The fourth proportional to 172,359.72, 258,532.06 and 54,028.36 is: 81,040.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,359.72 : 258,532.06 = 54,028.36 : x
  2. Step 2: Convert to fraction form
    172,359.72/258,532.06 = 54,028.36/x
  3. Step 3: Cross multiply
    172,359.72x = 258,532.06 × 54,028.36
  4. Step 4: Simplify right side
    172,359.72x = 13,968,063,209.22
  5. Step 5: Solve for x
    x = 13,968,063,209.22/172,359.72
  6. Step 6: Final answer
    x = 81,040.18

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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.