Home / 87,138,049.79-120,252,665.07-47,447,756.44

Finding the Fourth Proportional to 87,138,049.79, 120,252,665.07 and 47,447,756.44

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Solution

The fourth proportional to 87,138,049.79, 120,252,665.07 and 47,447,756.44 is: 65,479,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,138,049.79 : 120,252,665.07 = 47,447,756.44 : x
  2. Step 2: Convert to fraction form
    87,138,049.79/120,252,665.07 = 47,447,756.44/x
  3. Step 3: Cross multiply
    87,138,049.79x = 120,252,665.07 × 47,447,756.44
  4. Step 4: Simplify right side
    87,138,049.79x = 5,705,719,163,201,624
  5. Step 5: Solve for x
    x = 5,705,719,163,201,624/87,138,049.79
  6. Step 6: Final answer
    x = 65,479,078.05

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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.