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Finding the Fourth Proportional to 79,882.99, 119,789.62 and 42,434.06

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Solution

The fourth proportional to 79,882.99, 119,789.62 and 42,434.06 is: 63,632.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,882.99 : 119,789.62 = 42,434.06 : x
  2. Step 2: Convert to fraction form
    79,882.99/119,789.62 = 42,434.06/x
  3. Step 3: Cross multiply
    79,882.99x = 119,789.62 × 42,434.06
  4. Step 4: Simplify right side
    79,882.99x = 5,083,159,217.42
  5. Step 5: Solve for x
    x = 5,083,159,217.42/79,882.99
  6. Step 6: Final answer
    x = 63,632.56

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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.