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Finding the Fourth Proportional to 38,625,807.20, 57,945,709.20 and 19,408,200.80

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Solution

The fourth proportional to 38,625,807.20, 57,945,709.20 and 19,408,200.80 is: 29,115,817.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,625,807.20 : 57,945,709.20 = 19,408,200.80 : x
  2. Step 2: Convert to fraction form
    38,625,807.20/57,945,709.20 = 19,408,200.80/x
  3. Step 3: Cross multiply
    38,625,807.20x = 57,945,709.20 × 19,408,200.80
  4. Step 4: Simplify right side
    38,625,807.20x = 1,124,621,959,652,007.50
  5. Step 5: Solve for x
    x = 1,124,621,959,652,007.50/38,625,807.20
  6. Step 6: Final answer
    x = 29,115,817.67

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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.