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Finding the Fourth Proportional to 81,717.42, 112,769.37 and 45,906.68

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Solution

The fourth proportional to 81,717.42, 112,769.37 and 45,906.68 is: 63,350.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.42 : 112,769.37 = 45,906.68 : x
  2. Step 2: Convert to fraction form
    81,717.42/112,769.37 = 45,906.68/x
  3. Step 3: Cross multiply
    81,717.42x = 112,769.37 × 45,906.68
  4. Step 4: Simplify right side
    81,717.42x = 5,176,866,818.54
  5. Step 5: Solve for x
    x = 5,176,866,818.54/81,717.42
  6. Step 6: Final answer
    x = 63,350.84

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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.