Home / 81,965,772.40-123,090,376.20-43,702,020.40

Finding the Fourth Proportional to 81,965,772.40, 123,090,376.20 and 43,702,020.40

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Solution

The fourth proportional to 81,965,772.40, 123,090,376.20 and 43,702,020.40 is: 65,628,590.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,965,772.40 : 123,090,376.20 = 43,702,020.40 : x
  2. Step 2: Convert to fraction form
    81,965,772.40/123,090,376.20 = 43,702,020.40/x
  3. Step 3: Cross multiply
    81,965,772.40x = 123,090,376.20 × 43,702,020.40
  4. Step 4: Simplify right side
    81,965,772.40x = 5,379,298,131,736,074
  5. Step 5: Solve for x
    x = 5,379,298,131,736,074/81,965,772.40
  6. Step 6: Final answer
    x = 65,628,590.74

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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.