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Finding the Fourth Proportional to 51,279.52, 70,765.70 and 28,923.52

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Solution

The fourth proportional to 51,279.52, 70,765.70 and 28,923.52 is: 39,914.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,279.52 : 70,765.70 = 28,923.52 : x
  2. Step 2: Convert to fraction form
    51,279.52/70,765.70 = 28,923.52/x
  3. Step 3: Cross multiply
    51,279.52x = 70,765.70 × 28,923.52
  4. Step 4: Simplify right side
    51,279.52x = 2,046,793,139.26
  5. Step 5: Solve for x
    x = 2,046,793,139.26/51,279.52
  6. Step 6: Final answer
    x = 39,914.44

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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.