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Finding the Fourth Proportional to 66,903.40, 100,246.56 and 35,311.78

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Solution

The fourth proportional to 66,903.40, 100,246.56 and 35,311.78 is: 52,910.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,903.40 : 100,246.56 = 35,311.78 : x
  2. Step 2: Convert to fraction form
    66,903.40/100,246.56 = 35,311.78/x
  3. Step 3: Cross multiply
    66,903.40x = 100,246.56 × 35,311.78
  4. Step 4: Simplify right side
    66,903.40x = 3,539,884,472.48
  5. Step 5: Solve for x
    x = 3,539,884,472.48/66,903.40
  6. Step 6: Final answer
    x = 52,910.38

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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.