Home / 67,861.19-101,780.44-21,110.42

Finding the Fourth Proportional to 67,861.19, 101,780.44 and 21,110.42

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Solution

The fourth proportional to 67,861.19, 101,780.44 and 21,110.42 is: 31,662.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,861.19 : 101,780.44 = 21,110.42 : x
  2. Step 2: Convert to fraction form
    67,861.19/101,780.44 = 21,110.42/x
  3. Step 3: Cross multiply
    67,861.19x = 101,780.44 × 21,110.42
  4. Step 4: Simplify right side
    67,861.19x = 2,148,627,836.18
  5. Step 5: Solve for x
    x = 2,148,627,836.18/67,861.19
  6. Step 6: Final answer
    x = 31,662.10

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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.