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Finding the Fourth Proportional to 66,720.58, 100,114.81 and 29,270.94

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Solution

The fourth proportional to 66,720.58, 100,114.81 and 29,270.94 is: 43,921.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,720.58 : 100,114.81 = 29,270.94 : x
  2. Step 2: Convert to fraction form
    66,720.58/100,114.81 = 29,270.94/x
  3. Step 3: Cross multiply
    66,720.58x = 100,114.81 × 29,270.94
  4. Step 4: Simplify right side
    66,720.58x = 2,930,454,148.01
  5. Step 5: Solve for x
    x = 2,930,454,148.01/66,720.58
  6. Step 6: Final answer
    x = 43,921.29

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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.