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Finding the Fourth Proportional to 51,234.87, 70,703.99 and 28,573.89

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Solution

The fourth proportional to 51,234.87, 70,703.99 and 28,573.89 is: 39,431.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,234.87 : 70,703.99 = 28,573.89 : x
  2. Step 2: Convert to fraction form
    51,234.87/70,703.99 = 28,573.89/x
  3. Step 3: Cross multiply
    51,234.87x = 70,703.99 × 28,573.89
  4. Step 4: Simplify right side
    51,234.87x = 2,020,288,032.82
  5. Step 5: Solve for x
    x = 2,020,288,032.82/51,234.87
  6. Step 6: Final answer
    x = 39,431.90

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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.