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Finding the Fourth Proportional to 51,287.72, 70,770.69 and 28,627.97

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Solution

The fourth proportional to 51,287.72, 70,770.69 and 28,627.97 is: 39,503.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,287.72 : 70,770.69 = 28,627.97 : x
  2. Step 2: Convert to fraction form
    51,287.72/70,770.69 = 28,627.97/x
  3. Step 3: Cross multiply
    51,287.72x = 70,770.69 × 28,627.97
  4. Step 4: Simplify right side
    51,287.72x = 2,026,020,836.35
  5. Step 5: Solve for x
    x = 2,026,020,836.35/51,287.72
  6. Step 6: Final answer
    x = 39,503.04

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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.