Home / 68,721.16-103,097.88-21,333.83

Finding the Fourth Proportional to 68,721.16, 103,097.88 and 21,333.83

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Solution

The fourth proportional to 68,721.16, 103,097.88 and 21,333.83 is: 32,005.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,721.16 : 103,097.88 = 21,333.83 : x
  2. Step 2: Convert to fraction form
    68,721.16/103,097.88 = 21,333.83/x
  3. Step 3: Cross multiply
    68,721.16x = 103,097.88 × 21,333.83
  4. Step 4: Simplify right side
    68,721.16x = 2,199,472,709.72
  5. Step 5: Solve for x
    x = 2,199,472,709.72/68,721.16
  6. Step 6: Final answer
    x = 32,005.76

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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.