Home / 81,287.68-121,845.74-43,837.56

Finding the Fourth Proportional to 81,287.68, 121,845.74 and 43,837.56

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Solution

The fourth proportional to 81,287.68, 121,845.74 and 43,837.56 is: 65,710.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,287.68 : 121,845.74 = 43,837.56 : x
  2. Step 2: Convert to fraction form
    81,287.68/121,845.74 = 43,837.56/x
  3. Step 3: Cross multiply
    81,287.68x = 121,845.74 × 43,837.56
  4. Step 4: Simplify right side
    81,287.68x = 5,341,419,937.99
  5. Step 5: Solve for x
    x = 5,341,419,937.99/81,287.68
  6. Step 6: Final answer
    x = 65,710.08

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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.