Home / 85,202,861.20-127,729,642.20-51,137,760.40

Finding the Fourth Proportional to 85,202,861.20, 127,729,642.20 and 51,137,760.40

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Solution

The fourth proportional to 85,202,861.20, 127,729,642.20 and 51,137,760.40 is: 76,661,836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,202,861.20 : 127,729,642.20 = 51,137,760.40 : x
  2. Step 2: Convert to fraction form
    85,202,861.20/127,729,642.20 = 51,137,760.40/x
  3. Step 3: Cross multiply
    85,202,861.20x = 127,729,642.20 × 51,137,760.40
  4. Step 4: Simplify right side
    85,202,861.20x = 6,531,807,838,801,329
  5. Step 5: Solve for x
    x = 6,531,807,838,801,329/85,202,861.20
  6. Step 6: Final answer
    x = 76,661,836.78

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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.