Home / 66,918.28-100,377.35-20,171.15

Finding the Fourth Proportional to 66,918.28, 100,377.35 and 20,171.15

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Solution

The fourth proportional to 66,918.28, 100,377.35 and 20,171.15 is: 30,256.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,918.28 : 100,377.35 = 20,171.15 : x
  2. Step 2: Convert to fraction form
    66,918.28/100,377.35 = 20,171.15/x
  3. Step 3: Cross multiply
    66,918.28x = 100,377.35 × 20,171.15
  4. Step 4: Simplify right side
    66,918.28x = 2,024,726,482.60
  5. Step 5: Solve for x
    x = 2,024,726,482.60/66,918.28
  6. Step 6: Final answer
    x = 30,256.70

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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.