Home / 71,071.21-106,598.31-18,479.33

Finding the Fourth Proportional to 71,071.21, 106,598.31 and 18,479.33

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Solution

The fourth proportional to 71,071.21, 106,598.31 and 18,479.33 is: 27,716.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,071.21 : 106,598.31 = 18,479.33 : x
  2. Step 2: Convert to fraction form
    71,071.21/106,598.31 = 18,479.33/x
  3. Step 3: Cross multiply
    71,071.21x = 106,598.31 × 18,479.33
  4. Step 4: Simplify right side
    71,071.21x = 1,969,865,347.93
  5. Step 5: Solve for x
    x = 1,969,865,347.93/71,071.21
  6. Step 6: Final answer
    x = 27,716.78

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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.