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Finding the Fourth Proportional to 172,357.50, 258,536.33 and 54,038.07

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Solution

The fourth proportional to 172,357.50, 258,536.33 and 54,038.07 is: 81,057.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,357.50 : 258,536.33 = 54,038.07 : x
  2. Step 2: Convert to fraction form
    172,357.50/258,536.33 = 54,038.07/x
  3. Step 3: Cross multiply
    172,357.50x = 258,536.33 × 54,038.07
  4. Step 4: Simplify right side
    172,357.50x = 13,970,803,584.19
  5. Step 5: Solve for x
    x = 13,970,803,584.19/172,357.50
  6. Step 6: Final answer
    x = 81,057.12

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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.