Home / 71,013,102.85-106,520,704.08-19,891,890.37

Finding the Fourth Proportional to 71,013,102.85, 106,520,704.08 and 19,891,890.37

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Solution

The fourth proportional to 71,013,102.85, 106,520,704.08 and 19,891,890.37 is: 29,838,129.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,013,102.85 : 106,520,704.08 = 19,891,890.37 : x
  2. Step 2: Convert to fraction form
    71,013,102.85/106,520,704.08 = 19,891,890.37/x
  3. Step 3: Cross multiply
    71,013,102.85x = 106,520,704.08 × 19,891,890.37
  4. Step 4: Simplify right side
    71,013,102.85x = 2,118,898,167,694,571.75
  5. Step 5: Solve for x
    x = 2,118,898,167,694,571.75/71,013,102.85
  6. Step 6: Final answer
    x = 29,838,129.62

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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.