Home / 69,278.19-103,766.91-42,543.05

Finding the Fourth Proportional to 69,278.19, 103,766.91 and 42,543.05

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Solution

The fourth proportional to 69,278.19, 103,766.91 and 42,543.05 is: 63,722.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,278.19 : 103,766.91 = 42,543.05 : x
  2. Step 2: Convert to fraction form
    69,278.19/103,766.91 = 42,543.05/x
  3. Step 3: Cross multiply
    69,278.19x = 103,766.91 × 42,543.05
  4. Step 4: Simplify right side
    69,278.19x = 4,414,560,321.64
  5. Step 5: Solve for x
    x = 4,414,560,321.64/69,278.19
  6. Step 6: Final answer
    x = 63,722.22

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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.