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Finding the Fourth Proportional to 71,280.96, 106,945.80 and 26,920.56

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Solution

The fourth proportional to 71,280.96, 106,945.80 and 26,920.56 is: 40,390.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,280.96 : 106,945.80 = 26,920.56 : x
  2. Step 2: Convert to fraction form
    71,280.96/106,945.80 = 26,920.56/x
  3. Step 3: Cross multiply
    71,280.96x = 106,945.80 × 26,920.56
  4. Step 4: Simplify right side
    71,280.96x = 2,879,040,825.65
  5. Step 5: Solve for x
    x = 2,879,040,825.65/71,280.96
  6. Step 6: Final answer
    x = 40,390.04

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1.5x scale

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.