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Finding the Fourth Proportional to 79,013.79, 109,049.27 and 45,034.65

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Solution

The fourth proportional to 79,013.79, 109,049.27 and 45,034.65 is: 62,153.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,013.79 : 109,049.27 = 45,034.65 : x
  2. Step 2: Convert to fraction form
    79,013.79/109,049.27 = 45,034.65/x
  3. Step 3: Cross multiply
    79,013.79x = 109,049.27 × 45,034.65
  4. Step 4: Simplify right side
    79,013.79x = 4,910,995,482.03
  5. Step 5: Solve for x
    x = 4,910,995,482.03/79,013.79
  6. Step 6: Final answer
    x = 62,153.65

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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.