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Finding the Fourth Proportional to 85,073.42, 127,616.04 and 28,890.62

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Solution

The fourth proportional to 85,073.42, 127,616.04 and 28,890.62 is: 43,337.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,073.42 : 127,616.04 = 28,890.62 : x
  2. Step 2: Convert to fraction form
    85,073.42/127,616.04 = 28,890.62/x
  3. Step 3: Cross multiply
    85,073.42x = 127,616.04 × 28,890.62
  4. Step 4: Simplify right side
    85,073.42x = 3,686,906,517.54
  5. Step 5: Solve for x
    x = 3,686,906,517.54/85,073.42
  6. Step 6: Final answer
    x = 43,337.94

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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.