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Finding the Fourth Proportional to 72,379.53, 99,882.54 and 40,548.33

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Solution

The fourth proportional to 72,379.53, 99,882.54 and 40,548.33 is: 55,956.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,379.53 : 99,882.54 = 40,548.33 : x
  2. Step 2: Convert to fraction form
    72,379.53/99,882.54 = 40,548.33/x
  3. Step 3: Cross multiply
    72,379.53x = 99,882.54 × 40,548.33
  4. Step 4: Simplify right side
    72,379.53x = 4,050,070,193.16
  5. Step 5: Solve for x
    x = 4,050,070,193.16/72,379.53
  6. Step 6: Final answer
    x = 55,956.02

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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.