Home / 66,138.32-91,232.52-43,481.36

Finding the Fourth Proportional to 66,138.32, 91,232.52 and 43,481.36

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Solution

The fourth proportional to 66,138.32, 91,232.52 and 43,481.36 is: 59,979.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,138.32 : 91,232.52 = 43,481.36 : x
  2. Step 2: Convert to fraction form
    66,138.32/91,232.52 = 43,481.36/x
  3. Step 3: Cross multiply
    66,138.32x = 91,232.52 × 43,481.36
  4. Step 4: Simplify right side
    66,138.32x = 3,966,914,045.83
  5. Step 5: Solve for x
    x = 3,966,914,045.83/66,138.32
  6. Step 6: Final answer
    x = 59,979.06

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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.