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Finding the Fourth Proportional to 57,438.72, 86,158.15 and 27,860.90

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Solution

The fourth proportional to 57,438.72, 86,158.15 and 27,860.90 is: 41,791.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,438.72 : 86,158.15 = 27,860.90 : x
  2. Step 2: Convert to fraction form
    57,438.72/86,158.15 = 27,860.90/x
  3. Step 3: Cross multiply
    57,438.72x = 86,158.15 × 27,860.90
  4. Step 4: Simplify right side
    57,438.72x = 2,400,443,100.89
  5. Step 5: Solve for x
    x = 2,400,443,100.89/57,438.72
  6. Step 6: Final answer
    x = 41,791.38

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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.