Home / 83,439.21-115,146.66-45,198.77

Finding the Fourth Proportional to 83,439.21, 115,146.66 and 45,198.77

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Solution

The fourth proportional to 83,439.21, 115,146.66 and 45,198.77 is: 62,374.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,439.21 : 115,146.66 = 45,198.77 : x
  2. Step 2: Convert to fraction form
    83,439.21/115,146.66 = 45,198.77/x
  3. Step 3: Cross multiply
    83,439.21x = 115,146.66 × 45,198.77
  4. Step 4: Simplify right side
    83,439.21x = 5,204,486,995.37
  5. Step 5: Solve for x
    x = 5,204,486,995.37/83,439.21
  6. Step 6: Final answer
    x = 62,374.59

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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.