Home / 80,545,982.80-120,897,617.40-40,202,021.20

Finding the Fourth Proportional to 80,545,982.80, 120,897,617.40 and 40,202,021.20

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Solution

The fourth proportional to 80,545,982.80, 120,897,617.40 and 40,202,021.20 is: 60,342,284.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,545,982.80 : 120,897,617.40 = 40,202,021.20 : x
  2. Step 2: Convert to fraction form
    80,545,982.80/120,897,617.40 = 40,202,021.20/x
  3. Step 3: Cross multiply
    80,545,982.80x = 120,897,617.40 × 40,202,021.20
  4. Step 4: Simplify right side
    80,545,982.80x = 4,860,328,577,744,289
  5. Step 5: Solve for x
    x = 4,860,328,577,744,289/80,545,982.80
  6. Step 6: Final answer
    x = 60,342,284.11

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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.