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Finding the Fourth Proportional to 65,159.52, 89,912.56 and 36,480.80

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Solution

The fourth proportional to 65,159.52, 89,912.56 and 36,480.80 is: 50,339.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,159.52 : 89,912.56 = 36,480.80 : x
  2. Step 2: Convert to fraction form
    65,159.52/89,912.56 = 36,480.80/x
  3. Step 3: Cross multiply
    65,159.52x = 89,912.56 × 36,480.80
  4. Step 4: Simplify right side
    65,159.52x = 3,280,082,118.85
  5. Step 5: Solve for x
    x = 3,280,082,118.85/65,159.52
  6. Step 6: Final answer
    x = 50,339.26

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1.5x scale

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.