Home / 81,983.61-122,871.80-43,938.33

Finding the Fourth Proportional to 81,983.61, 122,871.80 and 43,938.33

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Solution

The fourth proportional to 81,983.61, 122,871.80 and 43,938.33 is: 65,851.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,983.61 : 122,871.80 = 43,938.33 : x
  2. Step 2: Convert to fraction form
    81,983.61/122,871.80 = 43,938.33/x
  3. Step 3: Cross multiply
    81,983.61x = 122,871.80 × 43,938.33
  4. Step 4: Simplify right side
    81,983.61x = 5,398,781,730.80
  5. Step 5: Solve for x
    x = 5,398,781,730.80/81,983.61
  6. Step 6: Final answer
    x = 65,851.97

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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.