Home / 68,979.59-103,456.32-21,587.53

Finding the Fourth Proportional to 68,979.59, 103,456.32 and 21,587.53

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Solution

The fourth proportional to 68,979.59, 103,456.32 and 21,587.53 is: 32,377.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,979.59 : 103,456.32 = 21,587.53 : x
  2. Step 2: Convert to fraction form
    68,979.59/103,456.32 = 21,587.53/x
  3. Step 3: Cross multiply
    68,979.59x = 103,456.32 × 21,587.53
  4. Step 4: Simplify right side
    68,979.59x = 2,233,366,411.69
  5. Step 5: Solve for x
    x = 2,233,366,411.69/68,979.59
  6. Step 6: Final answer
    x = 32,377.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.