Home / 66,979.40-100,466.52-20,231

Finding the Fourth Proportional to 66,979.40, 100,466.52 and 20,231

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Solution

The fourth proportional to 66,979.40, 100,466.52 and 20,231 is: 30,345.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,979.40 : 100,466.52 = 20,231 : x
  2. Step 2: Convert to fraction form
    66,979.40/100,466.52 = 20,231/x
  3. Step 3: Cross multiply
    66,979.40x = 100,466.52 × 20,231
  4. Step 4: Simplify right side
    66,979.40x = 2,032,538,166.12
  5. Step 5: Solve for x
    x = 2,032,538,166.12/66,979.40
  6. Step 6: Final answer
    x = 30,345.72

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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.