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Finding the Fourth Proportional to 57,765.30, 86,651.03 and 18,325.45

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Solution

The fourth proportional to 57,765.30, 86,651.03 and 18,325.45 is: 27,489.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,765.30 : 86,651.03 = 18,325.45 : x
  2. Step 2: Convert to fraction form
    57,765.30/86,651.03 = 18,325.45/x
  3. Step 3: Cross multiply
    57,765.30x = 86,651.03 × 18,325.45
  4. Step 4: Simplify right side
    57,765.30x = 1,587,919,117.71
  5. Step 5: Solve for x
    x = 1,587,919,117.71/57,765.30
  6. Step 6: Final answer
    x = 27,489.15

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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.