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Finding the Fourth Proportional to 79,170.68, 118,745.04 and 20,002.70

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Solution

The fourth proportional to 79,170.68, 118,745.04 and 20,002.70 is: 30,001.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,170.68 : 118,745.04 = 20,002.70 : x
  2. Step 2: Convert to fraction form
    79,170.68/118,745.04 = 20,002.70/x
  3. Step 3: Cross multiply
    79,170.68x = 118,745.04 × 20,002.70
  4. Step 4: Simplify right side
    79,170.68x = 2,375,221,411.61
  5. Step 5: Solve for x
    x = 2,375,221,411.61/79,170.68
  6. Step 6: Final answer
    x = 30,001.28

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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.