Home / 83,716.52-115,415.94-71,728.04

Finding the Fourth Proportional to 83,716.52, 115,415.94 and 71,728.04

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Solution

The fourth proportional to 83,716.52, 115,415.94 and 71,728.04 is: 98,888.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,716.52 : 115,415.94 = 71,728.04 : x
  2. Step 2: Convert to fraction form
    83,716.52/115,415.94 = 71,728.04/x
  3. Step 3: Cross multiply
    83,716.52x = 115,415.94 × 71,728.04
  4. Step 4: Simplify right side
    83,716.52x = 8,278,559,160.96
  5. Step 5: Solve for x
    x = 8,278,559,160.96/83,716.52
  6. Step 6: Final answer
    x = 98,888.00

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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.