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Finding the Fourth Proportional to 65,751.75, 90,737.42 and 40,601.25

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Solution

The fourth proportional to 65,751.75, 90,737.42 and 40,601.25 is: 56,029.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,751.75 : 90,737.42 = 40,601.25 : x
  2. Step 2: Convert to fraction form
    65,751.75/90,737.42 = 40,601.25/x
  3. Step 3: Cross multiply
    65,751.75x = 90,737.42 × 40,601.25
  4. Step 4: Simplify right side
    65,751.75x = 3,684,052,470.77
  5. Step 5: Solve for x
    x = 3,684,052,470.77/65,751.75
  6. Step 6: Final answer
    x = 56,029.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.