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Finding the Fourth Proportional to 66,423.78, 99,653.90 and 33,103.62

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Solution

The fourth proportional to 66,423.78, 99,653.90 and 33,103.62 is: 49,664.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,423.78 : 99,653.90 = 33,103.62 : x
  2. Step 2: Convert to fraction form
    66,423.78/99,653.90 = 33,103.62/x
  3. Step 3: Cross multiply
    66,423.78x = 99,653.90 × 33,103.62
  4. Step 4: Simplify right side
    66,423.78x = 3,298,904,671.60
  5. Step 5: Solve for x
    x = 3,298,904,671.60/66,423.78
  6. Step 6: Final answer
    x = 49,664.51

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1.5x scale

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.