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Finding the Fourth Proportional to 51,046.08, 70,449.92 and 28,690.08

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Solution

The fourth proportional to 51,046.08, 70,449.92 and 28,690.08 is: 39,595.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,046.08 : 70,449.92 = 28,690.08 : x
  2. Step 2: Convert to fraction form
    51,046.08/70,449.92 = 28,690.08/x
  3. Step 3: Cross multiply
    51,046.08x = 70,449.92 × 28,690.08
  4. Step 4: Simplify right side
    51,046.08x = 2,021,213,840.79
  5. Step 5: Solve for x
    x = 2,021,213,840.79/51,046.08
  6. Step 6: Final answer
    x = 39,595.87

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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.