Home / 81,387,383.40-122,222,792.70-43,123,631.40

Finding the Fourth Proportional to 81,387,383.40, 122,222,792.70 and 43,123,631.40

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Solution

The fourth proportional to 81,387,383.40, 122,222,792.70 and 43,123,631.40 is: 64,760,537.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,387,383.40 : 122,222,792.70 = 43,123,631.40 : x
  2. Step 2: Convert to fraction form
    81,387,383.40/122,222,792.70 = 43,123,631.40/x
  3. Step 3: Cross multiply
    81,387,383.40x = 122,222,792.70 × 43,123,631.40
  4. Step 4: Simplify right side
    81,387,383.40x = 5,270,690,661,073,411
  5. Step 5: Solve for x
    x = 5,270,690,661,073,411/81,387,383.40
  6. Step 6: Final answer
    x = 64,760,537.09

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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.