Home / 81,198.20-112,053.12-45,388.10

Finding the Fourth Proportional to 81,198.20, 112,053.12 and 45,388.10

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Solution

The fourth proportional to 81,198.20, 112,053.12 and 45,388.10 is: 62,635.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,198.20 : 112,053.12 = 45,388.10 : x
  2. Step 2: Convert to fraction form
    81,198.20/112,053.12 = 45,388.10/x
  3. Step 3: Cross multiply
    81,198.20x = 112,053.12 × 45,388.10
  4. Step 4: Simplify right side
    81,198.20x = 5,085,878,215.87
  5. Step 5: Solve for x
    x = 5,085,878,215.87/81,198.20
  6. Step 6: Final answer
    x = 62,635.36

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1.5x scale

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.