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Finding the Fourth Proportional to 57,616.29, 86,404.95 and 28,015.29

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Solution

The fourth proportional to 57,616.29, 86,404.95 and 28,015.29 is: 42,013.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,616.29 : 86,404.95 = 28,015.29 : x
  2. Step 2: Convert to fraction form
    57,616.29/86,404.95 = 28,015.29/x
  3. Step 3: Cross multiply
    57,616.29x = 86,404.95 × 28,015.29
  4. Step 4: Simplify right side
    57,616.29x = 2,420,659,731.69
  5. Step 5: Solve for x
    x = 2,420,659,731.69/57,616.29
  6. Step 6: Final answer
    x = 42,013.46

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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.