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Finding the Fourth Proportional to 79,191.16, 118,749.60 and 45,920.68

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Solution

The fourth proportional to 79,191.16, 118,749.60 and 45,920.68 is: 68,859.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,191.16 : 118,749.60 = 45,920.68 : x
  2. Step 2: Convert to fraction form
    79,191.16/118,749.60 = 45,920.68/x
  3. Step 3: Cross multiply
    79,191.16x = 118,749.60 × 45,920.68
  4. Step 4: Simplify right side
    79,191.16x = 5,453,062,381.73
  5. Step 5: Solve for x
    x = 5,453,062,381.73/79,191.16
  6. Step 6: Final answer
    x = 68,859.48

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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.