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Finding the Fourth Proportional to 79,177.91, 118,767.65 and 20,013.59

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Solution

The fourth proportional to 79,177.91, 118,767.65 and 20,013.59 is: 30,020.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,177.91 : 118,767.65 = 20,013.59 : x
  2. Step 2: Convert to fraction form
    79,177.91/118,767.65 = 20,013.59/x
  3. Step 3: Cross multiply
    79,177.91x = 118,767.65 × 20,013.59
  4. Step 4: Simplify right side
    79,177.91x = 2,376,967,249.21
  5. Step 5: Solve for x
    x = 2,376,967,249.21/79,177.91
  6. Step 6: Final answer
    x = 30,020.59

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1.5x scale

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.