Home / 87,101,219.20-120,198,728.64-47,942,158.72

Finding the Fourth Proportional to 87,101,219.20, 120,198,728.64 and 47,942,158.72

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Solution

The fourth proportional to 87,101,219.20, 120,198,728.64 and 47,942,158.72 is: 66,159,654.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,101,219.20 : 120,198,728.64 = 47,942,158.72 : x
  2. Step 2: Convert to fraction form
    87,101,219.20/120,198,728.64 = 47,942,158.72/x
  3. Step 3: Cross multiply
    87,101,219.20x = 120,198,728.64 × 47,942,158.72
  4. Step 4: Simplify right side
    87,101,219.20x = 5,762,586,526,401,090
  5. Step 5: Solve for x
    x = 5,762,586,526,401,090/87,101,219.20
  6. Step 6: Final answer
    x = 66,159,654.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.