Home / 83,839.10-115,601.18-66,830.16

Finding the Fourth Proportional to 83,839.10, 115,601.18 and 66,830.16

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Solution

The fourth proportional to 83,839.10, 115,601.18 and 66,830.16 is: 92,148.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,839.10 : 115,601.18 = 66,830.16 : x
  2. Step 2: Convert to fraction form
    83,839.10/115,601.18 = 66,830.16/x
  3. Step 3: Cross multiply
    83,839.10x = 115,601.18 × 66,830.16
  4. Step 4: Simplify right side
    83,839.10x = 7,725,645,454.94
  5. Step 5: Solve for x
    x = 7,725,645,454.94/83,839.10
  6. Step 6: Final answer
    x = 92,148.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.