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Finding the Fourth Proportional to 79,282.38, 109,409.72 and 43,471.65

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Solution

The fourth proportional to 79,282.38, 109,409.72 and 43,471.65 is: 59,990.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,282.38 : 109,409.72 = 43,471.65 : x
  2. Step 2: Convert to fraction form
    79,282.38/109,409.72 = 43,471.65/x
  3. Step 3: Cross multiply
    79,282.38x = 109,409.72 × 43,471.65
  4. Step 4: Simplify right side
    79,282.38x = 4,756,220,837.08
  5. Step 5: Solve for x
    x = 4,756,220,837.08/79,282.38
  6. Step 6: Final answer
    x = 59,990.89

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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.