Home / 71,064.68-106,578.45-21,131.34

Finding the Fourth Proportional to 71,064.68, 106,578.45 and 21,131.34

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Solution

The fourth proportional to 71,064.68, 106,578.45 and 21,131.34 is: 31,691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,064.68 : 106,578.45 = 21,131.34 : x
  2. Step 2: Convert to fraction form
    71,064.68/106,578.45 = 21,131.34/x
  3. Step 3: Cross multiply
    71,064.68x = 106,578.45 × 21,131.34
  4. Step 4: Simplify right side
    71,064.68x = 2,252,145,463.62
  5. Step 5: Solve for x
    x = 2,252,145,463.62/71,064.68
  6. Step 6: Final answer
    x = 31,691.49

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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.