Home / 66,780.13-100,171.23-21,801.28

Finding the Fourth Proportional to 66,780.13, 100,171.23 and 21,801.28

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Solution

The fourth proportional to 66,780.13, 100,171.23 and 21,801.28 is: 32,702.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,780.13 : 100,171.23 = 21,801.28 : x
  2. Step 2: Convert to fraction form
    66,780.13/100,171.23 = 21,801.28/x
  3. Step 3: Cross multiply
    66,780.13x = 100,171.23 × 21,801.28
  4. Step 4: Simplify right side
    66,780.13x = 2,183,861,033.17
  5. Step 5: Solve for x
    x = 2,183,861,033.17/66,780.13
  6. Step 6: Final answer
    x = 32,702.26

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1.5x scale

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.