Home / 81,657.25-122,493.62-31,741.18

Finding the Fourth Proportional to 81,657.25, 122,493.62 and 31,741.18

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Solution

The fourth proportional to 81,657.25, 122,493.62 and 31,741.18 is: 47,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657.25 : 122,493.62 = 31,741.18 : x
  2. Step 2: Convert to fraction form
    81,657.25/122,493.62 = 31,741.18/x
  3. Step 3: Cross multiply
    81,657.25x = 122,493.62 × 31,741.18
  4. Step 4: Simplify right side
    81,657.25x = 3,888,092,041.27
  5. Step 5: Solve for x
    x = 3,888,092,041.27/81,657.25
  6. Step 6: Final answer
    x = 47,614.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.