Home / 81,786,972.78-112,858,180.56-45,115,181.82

Finding the Fourth Proportional to 81,786,972.78, 112,858,180.56 and 45,115,181.82

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Solution

The fourth proportional to 81,786,972.78, 112,858,180.56 and 45,115,181.82 is: 62,254,625.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,786,972.78 : 112,858,180.56 = 45,115,181.82 : x
  2. Step 2: Convert to fraction form
    81,786,972.78/112,858,180.56 = 45,115,181.82/x
  3. Step 3: Cross multiply
    81,786,972.78x = 112,858,180.56 × 45,115,181.82
  4. Step 4: Simplify right side
    81,786,972.78x = 5,091,617,335,838,790
  5. Step 5: Solve for x
    x = 5,091,617,335,838,790/81,786,972.78
  6. Step 6: Final answer
    x = 62,254,625.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.