Home / 53,121.70-79,691.21-15,685.56

Finding the Fourth Proportional to 53,121.70, 79,691.21 and 15,685.56

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Solution

The fourth proportional to 53,121.70, 79,691.21 and 15,685.56 is: 23,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,121.70 : 79,691.21 = 15,685.56 : x
  2. Step 2: Convert to fraction form
    53,121.70/79,691.21 = 15,685.56/x
  3. Step 3: Cross multiply
    53,121.70x = 79,691.21 × 15,685.56
  4. Step 4: Simplify right side
    53,121.70x = 1,250,001,255.93
  5. Step 5: Solve for x
    x = 1,250,001,255.93/53,121.70
  6. Step 6: Final answer
    x = 23,530.90

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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.