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Finding the Fourth Proportional to 72,804.56, 109,233.11 and 25,426.62

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Solution

The fourth proportional to 72,804.56, 109,233.11 and 25,426.62 is: 38,149.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,804.56 : 109,233.11 = 25,426.62 : x
  2. Step 2: Convert to fraction form
    72,804.56/109,233.11 = 25,426.62/x
  3. Step 3: Cross multiply
    72,804.56x = 109,233.11 × 25,426.62
  4. Step 4: Simplify right side
    72,804.56x = 2,777,428,842.95
  5. Step 5: Solve for x
    x = 2,777,428,842.95/72,804.56
  6. Step 6: Final answer
    x = 38,149.11

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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.