Home / 68,729.31-94,618.13-61,643.43

Finding the Fourth Proportional to 68,729.31, 94,618.13 and 61,643.43

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Solution

The fourth proportional to 68,729.31, 94,618.13 and 61,643.43 is: 84,863.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,729.31 : 94,618.13 = 61,643.43 : x
  2. Step 2: Convert to fraction form
    68,729.31/94,618.13 = 61,643.43/x
  3. Step 3: Cross multiply
    68,729.31x = 94,618.13 × 61,643.43
  4. Step 4: Simplify right side
    68,729.31x = 5,832,585,765.17
  5. Step 5: Solve for x
    x = 5,832,585,765.17/68,729.31
  6. Step 6: Final answer
    x = 84,863.15

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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.