Home / 81,275.27-121,961.06-36,901.36

Finding the Fourth Proportional to 81,275.27, 121,961.06 and 36,901.36

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Solution

The fourth proportional to 81,275.27, 121,961.06 and 36,901.36 is: 55,373.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,275.27 : 121,961.06 = 36,901.36 : x
  2. Step 2: Convert to fraction form
    81,275.27/121,961.06 = 36,901.36/x
  3. Step 3: Cross multiply
    81,275.27x = 121,961.06 × 36,901.36
  4. Step 4: Simplify right side
    81,275.27x = 4,500,528,186.73
  5. Step 5: Solve for x
    x = 4,500,528,186.73/81,275.27
  6. Step 6: Final answer
    x = 55,373.89

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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.