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Finding the Fourth Proportional to 52,472.88, 78,711.24 and 21,307.44

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Solution

The fourth proportional to 52,472.88, 78,711.24 and 21,307.44 is: 31,961.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,472.88 : 78,711.24 = 21,307.44 : x
  2. Step 2: Convert to fraction form
    52,472.88/78,711.24 = 21,307.44/x
  3. Step 3: Cross multiply
    52,472.88x = 78,711.24 × 21,307.44
  4. Step 4: Simplify right side
    52,472.88x = 1,677,135,023.63
  5. Step 5: Solve for x
    x = 1,677,135,023.63/52,472.88
  6. Step 6: Final answer
    x = 31,961.94

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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.