Home / 83,909.83-115,736.61-55,220.35

Finding the Fourth Proportional to 83,909.83, 115,736.61 and 55,220.35

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Solution

The fourth proportional to 83,909.83, 115,736.61 and 55,220.35 is: 76,165.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,909.83 : 115,736.61 = 55,220.35 : x
  2. Step 2: Convert to fraction form
    83,909.83/115,736.61 = 55,220.35/x
  3. Step 3: Cross multiply
    83,909.83x = 115,736.61 × 55,220.35
  4. Step 4: Simplify right side
    83,909.83x = 6,391,016,112.01
  5. Step 5: Solve for x
    x = 6,391,016,112.01/83,909.83
  6. Step 6: Final answer
    x = 76,165.28

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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.