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Finding the Fourth Proportional to 66,709.01, 100,063.52 and 31,629.53

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Solution

The fourth proportional to 66,709.01, 100,063.52 and 31,629.53 is: 47,444.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,709.01 : 100,063.52 = 31,629.53 : x
  2. Step 2: Convert to fraction form
    66,709.01/100,063.52 = 31,629.53/x
  3. Step 3: Cross multiply
    66,709.01x = 100,063.52 × 31,629.53
  4. Step 4: Simplify right side
    66,709.01x = 3,164,962,107.75
  5. Step 5: Solve for x
    x = 3,164,962,107.75/66,709.01
  6. Step 6: Final answer
    x = 47,444.30

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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.