Home / 83,381.06-125,084.55-27,990.02

Finding the Fourth Proportional to 83,381.06, 125,084.55 and 27,990.02

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Solution

The fourth proportional to 83,381.06, 125,084.55 and 27,990.02 is: 41,989.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,381.06 : 125,084.55 = 27,990.02 : x
  2. Step 2: Convert to fraction form
    83,381.06/125,084.55 = 27,990.02/x
  3. Step 3: Cross multiply
    83,381.06x = 125,084.55 × 27,990.02
  4. Step 4: Simplify right side
    83,381.06x = 3,501,119,473.86
  5. Step 5: Solve for x
    x = 3,501,119,473.86/83,381.06
  6. Step 6: Final answer
    x = 41,989.38

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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.