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Finding the Fourth Proportional to 61,200.80, 91,606.80 and 43,704.80

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Solution

The fourth proportional to 61,200.80, 91,606.80 and 43,704.80 is: 65,418.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,200.80 : 91,606.80 = 43,704.80 : x
  2. Step 2: Convert to fraction form
    61,200.80/91,606.80 = 43,704.80/x
  3. Step 3: Cross multiply
    61,200.80x = 91,606.80 × 43,704.80
  4. Step 4: Simplify right side
    61,200.80x = 4,003,656,872.64
  5. Step 5: Solve for x
    x = 4,003,656,872.64/61,200.80
  6. Step 6: Final answer
    x = 65,418.37

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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.