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Finding the Fourth Proportional to 67,205.60, 92,742.48 and 38,910.56

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Solution

The fourth proportional to 67,205.60, 92,742.48 and 38,910.56 is: 53,695.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,205.60 : 92,742.48 = 38,910.56 : x
  2. Step 2: Convert to fraction form
    67,205.60/92,742.48 = 38,910.56/x
  3. Step 3: Cross multiply
    67,205.60x = 92,742.48 × 38,910.56
  4. Step 4: Simplify right side
    67,205.60x = 3,608,661,832.59
  5. Step 5: Solve for x
    x = 3,608,661,832.59/67,205.60
  6. Step 6: Final answer
    x = 53,695.85

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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.