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Finding the Fourth Proportional to 83,858.68, 125,778.30 and 45,919.36

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Solution

The fourth proportional to 83,858.68, 125,778.30 and 45,919.36 is: 68,873.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,858.68 : 125,778.30 = 45,919.36 : x
  2. Step 2: Convert to fraction form
    83,858.68/125,778.30 = 45,919.36/x
  3. Step 3: Cross multiply
    83,858.68x = 125,778.30 × 45,919.36
  4. Step 4: Simplify right side
    83,858.68x = 5,775,659,037.89
  5. Step 5: Solve for x
    x = 5,775,659,037.89/83,858.68
  6. Step 6: Final answer
    x = 68,873.72

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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.