Home / 80,145,312.97-120,061,401.92-55,213,321.25

Finding the Fourth Proportional to 80,145,312.97, 120,061,401.92 and 55,213,321.25

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Solution

The fourth proportional to 80,145,312.97, 120,061,401.92 and 55,213,321.25 is: 82,712,120.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,145,312.97 : 120,061,401.92 = 55,213,321.25 : x
  2. Step 2: Convert to fraction form
    80,145,312.97/120,061,401.92 = 55,213,321.25/x
  3. Step 3: Cross multiply
    80,145,312.97x = 120,061,401.92 × 55,213,321.25
  4. Step 4: Simplify right side
    80,145,312.97x = 6,628,988,753,472,053
  5. Step 5: Solve for x
    x = 6,628,988,753,472,053/80,145,312.97
  6. Step 6: Final answer
    x = 82,712,120.12

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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.