Home / 83,619.41-115,393.95-45,378.90

Finding the Fourth Proportional to 83,619.41, 115,393.95 and 45,378.90

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Solution

The fourth proportional to 83,619.41, 115,393.95 and 45,378.90 is: 62,622.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,619.41 : 115,393.95 = 45,378.90 : x
  2. Step 2: Convert to fraction form
    83,619.41/115,393.95 = 45,378.90/x
  3. Step 3: Cross multiply
    83,619.41x = 115,393.95 × 45,378.90
  4. Step 4: Simplify right side
    83,619.41x = 5,236,450,517.66
  5. Step 5: Solve for x
    x = 5,236,450,517.66/83,619.41
  6. Step 6: Final answer
    x = 62,622.43

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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.