Home / 71,215,016.90-106,807,578.38-20,085,078.29

Finding the Fourth Proportional to 71,215,016.90, 106,807,578.38 and 20,085,078.29

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Solution

The fourth proportional to 71,215,016.90, 106,807,578.38 and 20,085,078.29 is: 30,123,401.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,215,016.90 : 106,807,578.38 = 20,085,078.29 : x
  2. Step 2: Convert to fraction form
    71,215,016.90/106,807,578.38 = 20,085,078.29/x
  3. Step 3: Cross multiply
    71,215,016.90x = 106,807,578.38 × 20,085,078.29
  4. Step 4: Simplify right side
    71,215,016.90x = 2,145,238,573,093,148
  5. Step 5: Solve for x
    x = 2,145,238,573,093,148/71,215,016.90
  6. Step 6: Final answer
    x = 30,123,401.87

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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.