Home / 83,999.39-115,878.29-53,760.47

Finding the Fourth Proportional to 83,999.39, 115,878.29 and 53,760.47

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Solution

The fourth proportional to 83,999.39, 115,878.29 and 53,760.47 is: 74,163.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,999.39 : 115,878.29 = 53,760.47 : x
  2. Step 2: Convert to fraction form
    83,999.39/115,878.29 = 53,760.47/x
  3. Step 3: Cross multiply
    83,999.39x = 115,878.29 × 53,760.47
  4. Step 4: Simplify right side
    83,999.39x = 6,229,670,485.00
  5. Step 5: Solve for x
    x = 6,229,670,485.00/83,999.39
  6. Step 6: Final answer
    x = 74,163.29

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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.