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Finding the Fourth Proportional to 51,372.99, 70,894.49 and 28,711.96

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Solution

The fourth proportional to 51,372.99, 70,894.49 and 28,711.96 is: 39,622.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,372.99 : 70,894.49 = 28,711.96 : x
  2. Step 2: Convert to fraction form
    51,372.99/70,894.49 = 28,711.96/x
  3. Step 3: Cross multiply
    51,372.99x = 70,894.49 × 28,711.96
  4. Step 4: Simplify right side
    51,372.99x = 2,035,519,440.30
  5. Step 5: Solve for x
    x = 2,035,519,440.30/51,372.99
  6. Step 6: Final answer
    x = 39,622.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.