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Finding the Fourth Proportional to 81,793.89, 112,873.95 and 45,494.55

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Solution

The fourth proportional to 81,793.89, 112,873.95 and 45,494.55 is: 62,781.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,793.89 : 112,873.95 = 45,494.55 : x
  2. Step 2: Convert to fraction form
    81,793.89/112,873.95 = 45,494.55/x
  3. Step 3: Cross multiply
    81,793.89x = 112,873.95 × 45,494.55
  4. Step 4: Simplify right side
    81,793.89x = 5,135,149,334.50
  5. Step 5: Solve for x
    x = 5,135,149,334.50/81,793.89
  6. Step 6: Final answer
    x = 62,781.58

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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.