Home / 81,531,995.32-122,143,683.86-48,195,404.70

Finding the Fourth Proportional to 81,531,995.32, 122,143,683.86 and 48,195,404.70

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Solution

The fourth proportional to 81,531,995.32, 122,143,683.86 and 48,195,404.70 is: 72,201,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,531,995.32 : 122,143,683.86 = 48,195,404.70 : x
  2. Step 2: Convert to fraction form
    81,531,995.32/122,143,683.86 = 48,195,404.70/x
  3. Step 3: Cross multiply
    81,531,995.32x = 122,143,683.86 × 48,195,404.70
  4. Step 4: Simplify right side
    81,531,995.32x = 5,886,764,274,691,328
  5. Step 5: Solve for x
    x = 5,886,764,274,691,328/81,531,995.32
  6. Step 6: Final answer
    x = 72,201,891.44

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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.