Home / 83,974.95-115,909.25-55,315.53

Finding the Fourth Proportional to 83,974.95, 115,909.25 and 55,315.53

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Solution

The fourth proportional to 83,974.95, 115,909.25 and 55,315.53 is: 76,351.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,974.95 : 115,909.25 = 55,315.53 : x
  2. Step 2: Convert to fraction form
    83,974.95/115,909.25 = 55,315.53/x
  3. Step 3: Cross multiply
    83,974.95x = 115,909.25 × 55,315.53
  4. Step 4: Simplify right side
    83,974.95x = 6,411,581,319.07
  5. Step 5: Solve for x
    x = 6,411,581,319.07/83,974.95
  6. Step 6: Final answer
    x = 76,351.12

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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.