Home / 71,215,020.29-106,807,583.45-20,085,081.68

Finding the Fourth Proportional to 71,215,020.29, 106,807,583.45 and 20,085,081.68

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Solution

The fourth proportional to 71,215,020.29, 106,807,583.45 and 20,085,081.68 is: 30,123,406.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,215,020.29 : 106,807,583.45 = 20,085,081.68 : x
  2. Step 2: Convert to fraction form
    71,215,020.29/106,807,583.45 = 20,085,081.68/x
  3. Step 3: Cross multiply
    71,215,020.29x = 106,807,583.45 × 20,085,081.68
  4. Step 4: Simplify right side
    71,215,020.29x = 2,145,239,037,002,202.75
  5. Step 5: Solve for x
    x = 2,145,239,037,002,202.75/71,215,020.29
  6. Step 6: Final answer
    x = 30,123,406.95

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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.