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Finding the Fourth Proportional to 81,755.92, 112,803.46 and 47,745.10

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Solution

The fourth proportional to 81,755.92, 112,803.46 and 47,745.10 is: 65,876.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,755.92 : 112,803.46 = 47,745.10 : x
  2. Step 2: Convert to fraction form
    81,755.92/112,803.46 = 47,745.10/x
  3. Step 3: Cross multiply
    81,755.92x = 112,803.46 × 47,745.10
  4. Step 4: Simplify right side
    81,755.92x = 5,385,812,478.05
  5. Step 5: Solve for x
    x = 5,385,812,478.05/81,755.92
  6. Step 6: Final answer
    x = 65,876.73

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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.