Home / 67,205.28-100,807.78-19,853.62

Finding the Fourth Proportional to 67,205.28, 100,807.78 and 19,853.62

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Solution

The fourth proportional to 67,205.28, 100,807.78 and 19,853.62 is: 29,780.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,205.28 : 100,807.78 = 19,853.62 : x
  2. Step 2: Convert to fraction form
    67,205.28/100,807.78 = 19,853.62/x
  3. Step 3: Cross multiply
    67,205.28x = 100,807.78 × 19,853.62
  4. Step 4: Simplify right side
    67,205.28x = 2,001,399,137.61
  5. Step 5: Solve for x
    x = 2,001,399,137.61/67,205.28
  6. Step 6: Final answer
    x = 29,780.39

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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.