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Finding the Fourth Proportional to 66,871.60, 100,334.40 and 29,438.80

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Solution

The fourth proportional to 66,871.60, 100,334.40 and 29,438.80 is: 44,170.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,871.60 : 100,334.40 = 29,438.80 : x
  2. Step 2: Convert to fraction form
    66,871.60/100,334.40 = 29,438.80/x
  3. Step 3: Cross multiply
    66,871.60x = 100,334.40 × 29,438.80
  4. Step 4: Simplify right side
    66,871.60x = 2,953,724,334.72
  5. Step 5: Solve for x
    x = 2,953,724,334.72/66,871.60
  6. Step 6: Final answer
    x = 44,170.09

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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.