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Finding the Fourth Proportional to 66,410.46, 99,622.98 and 33,138.90

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Solution

The fourth proportional to 66,410.46, 99,622.98 and 33,138.90 is: 49,711.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,410.46 : 99,622.98 = 33,138.90 : x
  2. Step 2: Convert to fraction form
    66,410.46/99,622.98 = 33,138.90/x
  3. Step 3: Cross multiply
    66,410.46x = 99,622.98 × 33,138.90
  4. Step 4: Simplify right side
    66,410.46x = 3,301,395,971.92
  5. Step 5: Solve for x
    x = 3,301,395,971.92/66,410.46
  6. Step 6: Final answer
    x = 49,711.99

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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.