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Finding the Fourth Proportional to 115,227, 172,861.92 and 40,345.56

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Solution

The fourth proportional to 115,227, 172,861.92 and 40,345.56 is: 60,525.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,227 : 172,861.92 = 40,345.56 : x
  2. Step 2: Convert to fraction form
    115,227/172,861.92 = 40,345.56/x
  3. Step 3: Cross multiply
    115,227x = 172,861.92 × 40,345.56
  4. Step 4: Simplify right side
    115,227x = 6,974,210,965.08
  5. Step 5: Solve for x
    x = 6,974,210,965.08/115,227
  6. Step 6: Final answer
    x = 60,525.84

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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.