Home / 51,201,257.91-76,801,960.78-20,909,120.91

Finding the Fourth Proportional to 51,201,257.91, 76,801,960.78 and 20,909,120.91

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Solution

The fourth proportional to 51,201,257.91, 76,801,960.78 and 20,909,120.91 is: 31,363,711.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,201,257.91 : 76,801,960.78 = 20,909,120.91 : x
  2. Step 2: Convert to fraction form
    51,201,257.91/76,801,960.78 = 20,909,120.91/x
  3. Step 3: Cross multiply
    51,201,257.91x = 76,801,960.78 × 20,909,120.91
  4. Step 4: Simplify right side
    51,201,257.91x = 1,605,861,483,733,817.75
  5. Step 5: Solve for x
    x = 1,605,861,483,733,817.75/51,201,257.91
  6. Step 6: Final answer
    x = 31,363,711.55

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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.