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Finding the Fourth Proportional to 81,481.60, 112,444.45 and 45,671.60

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Solution

The fourth proportional to 81,481.60, 112,444.45 and 45,671.60 is: 63,026.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,481.60 : 112,444.45 = 45,671.60 : x
  2. Step 2: Convert to fraction form
    81,481.60/112,444.45 = 45,671.60/x
  3. Step 3: Cross multiply
    81,481.60x = 112,444.45 × 45,671.60
  4. Step 4: Simplify right side
    81,481.60x = 5,135,517,733.95
  5. Step 5: Solve for x
    x = 5,135,517,733.95/81,481.60
  6. Step 6: Final answer
    x = 63,026.72

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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.