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Finding the Fourth Proportional to 85,082.40, 127,626.72 and 43,480.80

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Solution

The fourth proportional to 85,082.40, 127,626.72 and 43,480.80 is: 65,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,082.40 : 127,626.72 = 43,480.80 : x
  2. Step 2: Convert to fraction form
    85,082.40/127,626.72 = 43,480.80/x
  3. Step 3: Cross multiply
    85,082.40x = 127,626.72 × 43,480.80
  4. Step 4: Simplify right side
    85,082.40x = 5,549,311,886.98
  5. Step 5: Solve for x
    x = 5,549,311,886.98/85,082.40
  6. Step 6: Final answer
    x = 65,222.79

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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.