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Finding the Fourth Proportional to 57,956.40, 86,934.60 and 34,239.60

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Solution

The fourth proportional to 57,956.40, 86,934.60 and 34,239.60 is: 51,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,956.40 : 86,934.60 = 34,239.60 : x
  2. Step 2: Convert to fraction form
    57,956.40/86,934.60 = 34,239.60/x
  3. Step 3: Cross multiply
    57,956.40x = 86,934.60 × 34,239.60
  4. Step 4: Simplify right side
    57,956.40x = 2,976,605,930.16
  5. Step 5: Solve for x
    x = 2,976,605,930.16/57,956.40
  6. Step 6: Final answer
    x = 51,359.40

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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.