Home / 81,965,822.40-123,090,451.20-43,702,070.40

Finding the Fourth Proportional to 81,965,822.40, 123,090,451.20 and 43,702,070.40

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Solution

The fourth proportional to 81,965,822.40, 123,090,451.20 and 43,702,070.40 is: 65,628,665.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,965,822.40 : 123,090,451.20 = 43,702,070.40 : x
  2. Step 2: Convert to fraction form
    81,965,822.40/123,090,451.20 = 43,702,070.40/x
  3. Step 3: Cross multiply
    81,965,822.40x = 123,090,451.20 × 43,702,070.40
  4. Step 4: Simplify right side
    81,965,822.40x = 5,379,307,563,910,164
  5. Step 5: Solve for x
    x = 5,379,307,563,910,164/81,965,822.40
  6. Step 6: Final answer
    x = 65,628,665.78

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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.