Home / 81,322.38-121,971.02-22,162.82

Finding the Fourth Proportional to 81,322.38, 121,971.02 and 22,162.82

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Solution

The fourth proportional to 81,322.38, 121,971.02 and 22,162.82 is: 33,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,322.38 : 121,971.02 = 22,162.82 : x
  2. Step 2: Convert to fraction form
    81,322.38/121,971.02 = 22,162.82/x
  3. Step 3: Cross multiply
    81,322.38x = 121,971.02 × 22,162.82
  4. Step 4: Simplify right side
    81,322.38x = 2,703,221,040.81
  5. Step 5: Solve for x
    x = 2,703,221,040.81/81,322.38
  6. Step 6: Final answer
    x = 33,240.80

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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.