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Finding the Fourth Proportional to 57,471.54, 86,208.76 and 15,918.90

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Solution

The fourth proportional to 57,471.54, 86,208.76 and 15,918.90 is: 23,878.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,471.54 : 86,208.76 = 15,918.90 : x
  2. Step 2: Convert to fraction form
    57,471.54/86,208.76 = 15,918.90/x
  3. Step 3: Cross multiply
    57,471.54x = 86,208.76 × 15,918.90
  4. Step 4: Simplify right side
    57,471.54x = 1,372,348,629.56
  5. Step 5: Solve for x
    x = 1,372,348,629.56/57,471.54
  6. Step 6: Final answer
    x = 23,878.75

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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.