Home / 80,145,312.96-120,061,401.93-55,213,321.25

Finding the Fourth Proportional to 80,145,312.96, 120,061,401.93 and 55,213,321.25

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Solution

The fourth proportional to 80,145,312.96, 120,061,401.93 and 55,213,321.25 is: 82,712,120.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,145,312.96 : 120,061,401.93 = 55,213,321.25 : x
  2. Step 2: Convert to fraction form
    80,145,312.96/120,061,401.93 = 55,213,321.25/x
  3. Step 3: Cross multiply
    80,145,312.96x = 120,061,401.93 × 55,213,321.25
  4. Step 4: Simplify right side
    80,145,312.96x = 6,628,988,753,886,153
  5. Step 5: Solve for x
    x = 6,628,988,753,886,153/80,145,312.96
  6. Step 6: Final answer
    x = 82,712,120.14

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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.