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Finding the Fourth Proportional to 51,481.47, 77,081.76 and 38,963.63

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Solution

The fourth proportional to 51,481.47, 77,081.76 and 38,963.63 is: 58,339.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,481.47 : 77,081.76 = 38,963.63 : x
  2. Step 2: Convert to fraction form
    51,481.47/77,081.76 = 38,963.63/x
  3. Step 3: Cross multiply
    51,481.47x = 77,081.76 × 38,963.63
  4. Step 4: Simplify right side
    51,481.47x = 3,003,385,369.09
  5. Step 5: Solve for x
    x = 3,003,385,369.09/51,481.47
  6. Step 6: Final answer
    x = 58,339.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.