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Finding the Fourth Proportional to 85,062.80, 127,604.63 and 28,912.16

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Solution

The fourth proportional to 85,062.80, 127,604.63 and 28,912.16 is: 43,371.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,062.80 : 127,604.63 = 28,912.16 : x
  2. Step 2: Convert to fraction form
    85,062.80/127,604.63 = 28,912.16/x
  3. Step 3: Cross multiply
    85,062.80x = 127,604.63 × 28,912.16
  4. Step 4: Simplify right side
    85,062.80x = 3,689,325,479.30
  5. Step 5: Solve for x
    x = 3,689,325,479.30/85,062.80
  6. Step 6: Final answer
    x = 43,371.79

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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.