Home / 66,871.05-100,282.62-31,326.28

Finding the Fourth Proportional to 66,871.05, 100,282.62 and 31,326.28

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Solution

The fourth proportional to 66,871.05, 100,282.62 and 31,326.28 is: 46,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,871.05 : 100,282.62 = 31,326.28 : x
  2. Step 2: Convert to fraction form
    66,871.05/100,282.62 = 31,326.28/x
  3. Step 3: Cross multiply
    66,871.05x = 100,282.62 × 31,326.28
  4. Step 4: Simplify right side
    66,871.05x = 3,141,481,433.25
  5. Step 5: Solve for x
    x = 3,141,481,433.25/66,871.05
  6. Step 6: Final answer
    x = 46,978.20

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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.