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Finding the Fourth Proportional to 79,245.96, 118,868.73 and 20,081.46

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Solution

The fourth proportional to 79,245.96, 118,868.73 and 20,081.46 is: 30,122.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,245.96 : 118,868.73 = 20,081.46 : x
  2. Step 2: Convert to fraction form
    79,245.96/118,868.73 = 20,081.46/x
  3. Step 3: Cross multiply
    79,245.96x = 118,868.73 × 20,081.46
  4. Step 4: Simplify right side
    79,245.96x = 2,387,057,646.75
  5. Step 5: Solve for x
    x = 2,387,057,646.75/79,245.96
  6. Step 6: Final answer
    x = 30,122.14

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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.