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Finding the Fourth Proportional to 57,819.40, 86,729.10 and 26,715.40

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Solution

The fourth proportional to 57,819.40, 86,729.10 and 26,715.40 is: 40,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,819.40 : 86,729.10 = 26,715.40 : x
  2. Step 2: Convert to fraction form
    57,819.40/86,729.10 = 26,715.40/x
  3. Step 3: Cross multiply
    57,819.40x = 86,729.10 × 26,715.40
  4. Step 4: Simplify right side
    57,819.40x = 2,317,002,598.14
  5. Step 5: Solve for x
    x = 2,317,002,598.14/57,819.40
  6. Step 6: Final answer
    x = 40,073.10

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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.