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Finding the Fourth Proportional to 79,043.26, 109,079.58 and 47,230.78

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Solution

The fourth proportional to 79,043.26, 109,079.58 and 47,230.78 is: 65,178.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,043.26 : 109,079.58 = 47,230.78 : x
  2. Step 2: Convert to fraction form
    79,043.26/109,079.58 = 47,230.78/x
  3. Step 3: Cross multiply
    79,043.26x = 109,079.58 × 47,230.78
  4. Step 4: Simplify right side
    79,043.26x = 5,151,913,645.47
  5. Step 5: Solve for x
    x = 5,151,913,645.47/79,043.26
  6. Step 6: Final answer
    x = 65,178.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.