Home / 68,077.23-102,115.89-21,333.75

Finding the Fourth Proportional to 68,077.23, 102,115.89 and 21,333.75

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Solution

The fourth proportional to 68,077.23, 102,115.89 and 21,333.75 is: 32,000.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,077.23 : 102,115.89 = 21,333.75 : x
  2. Step 2: Convert to fraction form
    68,077.23/102,115.89 = 21,333.75/x
  3. Step 3: Cross multiply
    68,077.23x = 102,115.89 × 21,333.75
  4. Step 4: Simplify right side
    68,077.23x = 2,178,514,868.29
  5. Step 5: Solve for x
    x = 2,178,514,868.29/68,077.23
  6. Step 6: Final answer
    x = 32,000.64

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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.