Home / 83,438.95-115,145.81-45,198.58

Finding the Fourth Proportional to 83,438.95, 115,145.81 and 45,198.58

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Solution

The fourth proportional to 83,438.95, 115,145.81 and 45,198.58 is: 62,374.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,438.95 : 115,145.81 = 45,198.58 : x
  2. Step 2: Convert to fraction form
    83,438.95/115,145.81 = 45,198.58/x
  3. Step 3: Cross multiply
    83,438.95x = 115,145.81 × 45,198.58
  4. Step 4: Simplify right side
    83,438.95x = 5,204,427,104.95
  5. Step 5: Solve for x
    x = 5,204,427,104.95/83,438.95
  6. Step 6: Final answer
    x = 62,374.07

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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.