Home / 83,911.08-115,738.33-55,221.60

Finding the Fourth Proportional to 83,911.08, 115,738.33 and 55,221.60

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Solution

The fourth proportional to 83,911.08, 115,738.33 and 55,221.60 is: 76,167.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,911.08 : 115,738.33 = 55,221.60 : x
  2. Step 2: Convert to fraction form
    83,911.08/115,738.33 = 55,221.60/x
  3. Step 3: Cross multiply
    83,911.08x = 115,738.33 × 55,221.60
  4. Step 4: Simplify right side
    83,911.08x = 6,391,255,763.93
  5. Step 5: Solve for x
    x = 6,391,255,763.93/83,911.08
  6. Step 6: Final answer
    x = 76,167.01

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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.