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Finding the Fourth Proportional to 68,713.08, 103,079.41 and 21,332.26

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Solution

The fourth proportional to 68,713.08, 103,079.41 and 21,332.26 is: 32,001.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,713.08 : 103,079.41 = 21,332.26 : x
  2. Step 2: Convert to fraction form
    68,713.08/103,079.41 = 21,332.26/x
  3. Step 3: Cross multiply
    68,713.08x = 103,079.41 × 21,332.26
  4. Step 4: Simplify right side
    68,713.08x = 2,198,916,774.77
  5. Step 5: Solve for x
    x = 2,198,916,774.77/68,713.08
  6. Step 6: Final answer
    x = 32,001.43

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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.