Home / 83,872.12-115,646.56-66,863.07

Finding the Fourth Proportional to 83,872.12, 115,646.56 and 66,863.07

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Solution

The fourth proportional to 83,872.12, 115,646.56 and 66,863.07 is: 92,193.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,872.12 : 115,646.56 = 66,863.07 : x
  2. Step 2: Convert to fraction form
    83,872.12/115,646.56 = 66,863.07/x
  3. Step 3: Cross multiply
    83,872.12x = 115,646.56 × 66,863.07
  4. Step 4: Simplify right side
    83,872.12x = 7,732,484,036.54
  5. Step 5: Solve for x
    x = 7,732,484,036.54/83,872.12
  6. Step 6: Final answer
    x = 92,193.74

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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.