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Finding the Fourth Proportional to 51,296.60, 76,934.10 and 21,715.40

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Solution

The fourth proportional to 51,296.60, 76,934.10 and 21,715.40 is: 32,568.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,296.60 : 76,934.10 = 21,715.40 : x
  2. Step 2: Convert to fraction form
    51,296.60/76,934.10 = 21,715.40/x
  3. Step 3: Cross multiply
    51,296.60x = 76,934.10 × 21,715.40
  4. Step 4: Simplify right side
    51,296.60x = 1,670,654,755.14
  5. Step 5: Solve for x
    x = 1,670,654,755.14/51,296.60
  6. Step 6: Final answer
    x = 32,568.53

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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.