Home / 81,987,371.64-113,153,823.18-47,179,351.80

Finding the Fourth Proportional to 81,987,371.64, 113,153,823.18 and 47,179,351.80

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Solution

The fourth proportional to 81,987,371.64, 113,153,823.18 and 47,179,351.80 is: 65,113,979.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,987,371.64 : 113,153,823.18 = 47,179,351.80 : x
  2. Step 2: Convert to fraction form
    81,987,371.64/113,153,823.18 = 47,179,351.80/x
  3. Step 3: Cross multiply
    81,987,371.64x = 113,153,823.18 × 47,179,351.80
  4. Step 4: Simplify right side
    81,987,371.64x = 5,338,524,031,324,215
  5. Step 5: Solve for x
    x = 5,338,524,031,324,215/81,987,371.64
  6. Step 6: Final answer
    x = 65,113,979.44

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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.