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Finding the Fourth Proportional to 45,308, 67,745.72 and 41,337.78

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Solution

The fourth proportional to 45,308, 67,745.72 and 41,337.78 is: 61,809.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,308 : 67,745.72 = 41,337.78 : x
  2. Step 2: Convert to fraction form
    45,308/67,745.72 = 41,337.78/x
  3. Step 3: Cross multiply
    45,308x = 67,745.72 × 41,337.78
  4. Step 4: Simplify right side
    45,308x = 2,800,457,669.30
  5. Step 5: Solve for x
    x = 2,800,457,669.30/45,308
  6. Step 6: Final answer
    x = 61,809.34

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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.