Home / 81,134.07-121,687.07-21,955.92

Finding the Fourth Proportional to 81,134.07, 121,687.07 and 21,955.92

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Solution

The fourth proportional to 81,134.07, 121,687.07 and 21,955.92 is: 32,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,134.07 : 121,687.07 = 21,955.92 : x
  2. Step 2: Convert to fraction form
    81,134.07/121,687.07 = 21,955.92/x
  3. Step 3: Cross multiply
    81,134.07x = 121,687.07 × 21,955.92
  4. Step 4: Simplify right side
    81,134.07x = 2,671,751,464.17
  5. Step 5: Solve for x
    x = 2,671,751,464.17/81,134.07
  6. Step 6: Final answer
    x = 32,930.08

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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.