Home / 81,901.80-122,827.92-31,968.36

Finding the Fourth Proportional to 81,901.80, 122,827.92 and 31,968.36

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Solution

The fourth proportional to 81,901.80, 122,827.92 and 31,968.36 is: 47,942.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,901.80 : 122,827.92 = 31,968.36 : x
  2. Step 2: Convert to fraction form
    81,901.80/122,827.92 = 31,968.36/x
  3. Step 3: Cross multiply
    81,901.80x = 122,827.92 × 31,968.36
  4. Step 4: Simplify right side
    81,901.80x = 3,926,607,164.61
  5. Step 5: Solve for x
    x = 3,926,607,164.61/81,901.80
  6. Step 6: Final answer
    x = 47,942.87

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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.