Home / 90,987,416.20-136,481,124.30-45,543,305.80

Finding the Fourth Proportional to 90,987,416.20, 136,481,124.30 and 45,543,305.80

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Solution

The fourth proportional to 90,987,416.20, 136,481,124.30 and 45,543,305.80 is: 68,314,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,987,416.20 : 136,481,124.30 = 45,543,305.80 : x
  2. Step 2: Convert to fraction form
    90,987,416.20/136,481,124.30 = 45,543,305.80/x
  3. Step 3: Cross multiply
    90,987,416.20x = 136,481,124.30 × 45,543,305.80
  4. Step 4: Simplify right side
    90,987,416.20x = 6,215,801,579,922,711
  5. Step 5: Solve for x
    x = 6,215,801,579,922,711/90,987,416.20
  6. Step 6: Final answer
    x = 68,314,958.70

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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.