Home / 81,728,497.60-122,531,729.10-49,373,582.20

Finding the Fourth Proportional to 81,728,497.60, 122,531,729.10 and 49,373,582.20

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Solution

The fourth proportional to 81,728,497.60, 122,531,729.10 and 49,373,582.20 is: 74,023,511.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,728,497.60 : 122,531,729.10 = 49,373,582.20 : x
  2. Step 2: Convert to fraction form
    81,728,497.60/122,531,729.10 = 49,373,582.20/x
  3. Step 3: Cross multiply
    81,728,497.60x = 122,531,729.10 × 49,373,582.20
  4. Step 4: Simplify right side
    81,728,497.60x = 6,049,830,398,826,982
  5. Step 5: Solve for x
    x = 6,049,830,398,826,982/81,728,497.60
  6. Step 6: Final answer
    x = 74,023,511.71

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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.