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Finding the Fourth Proportional to 81,161.73, 112,003.74 and 45,353.25

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Solution

The fourth proportional to 81,161.73, 112,003.74 and 45,353.25 is: 62,587.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,161.73 : 112,003.74 = 45,353.25 : x
  2. Step 2: Convert to fraction form
    81,161.73/112,003.74 = 45,353.25/x
  3. Step 3: Cross multiply
    81,161.73x = 112,003.74 × 45,353.25
  4. Step 4: Simplify right side
    81,161.73x = 5,079,733,621.16
  5. Step 5: Solve for x
    x = 5,079,733,621.16/81,161.73
  6. Step 6: Final answer
    x = 62,587.79

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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.