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Finding the Fourth Proportional to 66,452.40, 99,678.60 and 54,010.80

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Solution

The fourth proportional to 66,452.40, 99,678.60 and 54,010.80 is: 81,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,452.40 : 99,678.60 = 54,010.80 : x
  2. Step 2: Convert to fraction form
    66,452.40/99,678.60 = 54,010.80/x
  3. Step 3: Cross multiply
    66,452.40x = 99,678.60 × 54,010.80
  4. Step 4: Simplify right side
    66,452.40x = 5,383,720,928.88
  5. Step 5: Solve for x
    x = 5,383,720,928.88/66,452.40
  6. Step 6: Final answer
    x = 81,016.20

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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.