Home / 83,356.79-125,306.12-66,897.18

Finding the Fourth Proportional to 83,356.79, 125,306.12 and 66,897.18

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Solution

The fourth proportional to 83,356.79, 125,306.12 and 66,897.18 is: 100,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,356.79 : 125,306.12 = 66,897.18 : x
  2. Step 2: Convert to fraction form
    83,356.79/125,306.12 = 66,897.18/x
  3. Step 3: Cross multiply
    83,356.79x = 125,306.12 × 66,897.18
  4. Step 4: Simplify right side
    83,356.79x = 8,382,626,231.98
  5. Step 5: Solve for x
    x = 8,382,626,231.98/83,356.79
  6. Step 6: Final answer
    x = 100,563.21

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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.