Home / 71,431.47-107,162.19-21,515.22

Finding the Fourth Proportional to 71,431.47, 107,162.19 and 21,515.22

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Solution

The fourth proportional to 71,431.47, 107,162.19 and 21,515.22 is: 32,277.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,431.47 : 107,162.19 = 21,515.22 : x
  2. Step 2: Convert to fraction form
    71,431.47/107,162.19 = 21,515.22/x
  3. Step 3: Cross multiply
    71,431.47x = 107,162.19 × 21,515.22
  4. Step 4: Simplify right side
    71,431.47x = 2,305,618,093.53
  5. Step 5: Solve for x
    x = 2,305,618,093.53/71,431.47
  6. Step 6: Final answer
    x = 32,277.34

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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.