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Finding the Fourth Proportional to 72,252.56, 99,742.62 and 54,354.38

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Solution

The fourth proportional to 72,252.56, 99,742.62 and 54,354.38 is: 75,034.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,252.56 : 99,742.62 = 54,354.38 : x
  2. Step 2: Convert to fraction form
    72,252.56/99,742.62 = 54,354.38/x
  3. Step 3: Cross multiply
    72,252.56x = 99,742.62 × 54,354.38
  4. Step 4: Simplify right side
    72,252.56x = 5,421,448,269.68
  5. Step 5: Solve for x
    x = 5,421,448,269.68/72,252.56
  6. Step 6: Final answer
    x = 75,034.69

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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.