Home / 71,215,015.40-106,807,576.13-20,085,076.79

Finding the Fourth Proportional to 71,215,015.40, 106,807,576.13 and 20,085,076.79

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Solution

The fourth proportional to 71,215,015.40, 106,807,576.13 and 20,085,076.79 is: 30,123,399.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,215,015.40 : 106,807,576.13 = 20,085,076.79 : x
  2. Step 2: Convert to fraction form
    71,215,015.40/106,807,576.13 = 20,085,076.79/x
  3. Step 3: Cross multiply
    71,215,015.40x = 106,807,576.13 × 20,085,076.79
  4. Step 4: Simplify right side
    71,215,015.40x = 2,145,238,368,195,058
  5. Step 5: Solve for x
    x = 2,145,238,368,195,058/71,215,015.40
  6. Step 6: Final answer
    x = 30,123,399.63

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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.