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Finding the Fourth Proportional to 55,540.77, 83,311.07 and 13,987.77

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Solution

The fourth proportional to 55,540.77, 83,311.07 and 13,987.77 is: 20,981.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,540.77 : 83,311.07 = 13,987.77 : x
  2. Step 2: Convert to fraction form
    55,540.77/83,311.07 = 13,987.77/x
  3. Step 3: Cross multiply
    55,540.77x = 83,311.07 × 13,987.77
  4. Step 4: Simplify right side
    55,540.77x = 1,165,336,015.68
  5. Step 5: Solve for x
    x = 1,165,336,015.68/55,540.77
  6. Step 6: Final answer
    x = 20,981.63

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.