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Finding the Fourth Proportional to 83,903.67, 125,805.30 and 56,919.18

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Solution

The fourth proportional to 83,903.67, 125,805.30 and 56,919.18 is: 85,344.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,903.67 : 125,805.30 = 56,919.18 : x
  2. Step 2: Convert to fraction form
    83,903.67/125,805.30 = 56,919.18/x
  3. Step 3: Cross multiply
    83,903.67x = 125,805.30 × 56,919.18
  4. Step 4: Simplify right side
    83,903.67x = 7,160,734,515.65
  5. Step 5: Solve for x
    x = 7,160,734,515.65/83,903.67
  6. Step 6: Final answer
    x = 85,344.71

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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.