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Finding the Fourth Proportional to 79,144.68, 109,204.47 and 53,671.80

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Solution

The fourth proportional to 79,144.68, 109,204.47 and 53,671.80 is: 74,056.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,144.68 : 109,204.47 = 53,671.80 : x
  2. Step 2: Convert to fraction form
    79,144.68/109,204.47 = 53,671.80/x
  3. Step 3: Cross multiply
    79,144.68x = 109,204.47 × 53,671.80
  4. Step 4: Simplify right side
    79,144.68x = 5,861,200,472.95
  5. Step 5: Solve for x
    x = 5,861,200,472.95/79,144.68
  6. Step 6: Final answer
    x = 74,056.78

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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.