Home / 68,387.90-102,585.49-21,637.13

Finding the Fourth Proportional to 68,387.90, 102,585.49 and 21,637.13

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Solution

The fourth proportional to 68,387.90, 102,585.49 and 21,637.13 is: 32,456.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,387.90 : 102,585.49 = 21,637.13 : x
  2. Step 2: Convert to fraction form
    68,387.90/102,585.49 = 21,637.13/x
  3. Step 3: Cross multiply
    68,387.90x = 102,585.49 × 21,637.13
  4. Step 4: Simplify right side
    68,387.90x = 2,219,655,016.22
  5. Step 5: Solve for x
    x = 2,219,655,016.22/68,387.90
  6. Step 6: Final answer
    x = 32,456.84

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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.