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Finding the Fourth Proportional to 92,805.92, 128,064.48 and 52,517.60

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Solution

The fourth proportional to 92,805.92, 128,064.48 and 52,517.60 is: 72,469.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,805.92 : 128,064.48 = 52,517.60 : x
  2. Step 2: Convert to fraction form
    92,805.92/128,064.48 = 52,517.60/x
  3. Step 3: Cross multiply
    92,805.92x = 128,064.48 × 52,517.60
  4. Step 4: Simplify right side
    92,805.92x = 6,725,639,134.85
  5. Step 5: Solve for x
    x = 6,725,639,134.85/92,805.92
  6. Step 6: Final answer
    x = 72,469.94

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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.