Home / 70,491,843.86-105,738,495.24-21,308,105.61

Finding the Fourth Proportional to 70,491,843.86, 105,738,495.24 and 21,308,105.61

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Solution

The fourth proportional to 70,491,843.86, 105,738,495.24 and 21,308,105.61 is: 31,962,378.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,491,843.86 : 105,738,495.24 = 21,308,105.61 : x
  2. Step 2: Convert to fraction form
    70,491,843.86/105,738,495.24 = 21,308,105.61/x
  3. Step 3: Cross multiply
    70,491,843.86x = 105,738,495.24 × 21,308,105.61
  4. Step 4: Simplify right side
    70,491,843.86x = 2,253,087,023,616,402
  5. Step 5: Solve for x
    x = 2,253,087,023,616,402/70,491,843.86
  6. Step 6: Final answer
    x = 31,962,378.91

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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.