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Finding the Fourth Proportional to 66,606.72, 99,901.44 and 31,568.64

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Solution

The fourth proportional to 66,606.72, 99,901.44 and 31,568.64 is: 47,348.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,606.72 : 99,901.44 = 31,568.64 : x
  2. Step 2: Convert to fraction form
    66,606.72/99,901.44 = 31,568.64/x
  3. Step 3: Cross multiply
    66,606.72x = 99,901.44 × 31,568.64
  4. Step 4: Simplify right side
    66,606.72x = 3,153,752,594.84
  5. Step 5: Solve for x
    x = 3,153,752,594.84/66,606.72
  6. Step 6: Final answer
    x = 47,348.87

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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.