Home / 81,936.54-122,943.09-42,472.13

Finding the Fourth Proportional to 81,936.54, 122,943.09 and 42,472.13

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Solution

The fourth proportional to 81,936.54, 122,943.09 and 42,472.13 is: 63,728.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,936.54 : 122,943.09 = 42,472.13 : x
  2. Step 2: Convert to fraction form
    81,936.54/122,943.09 = 42,472.13/x
  3. Step 3: Cross multiply
    81,936.54x = 122,943.09 × 42,472.13
  4. Step 4: Simplify right side
    81,936.54x = 5,221,654,487.54
  5. Step 5: Solve for x
    x = 5,221,654,487.54/81,936.54
  6. Step 6: Final answer
    x = 63,728.03

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1.5x scale

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.