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Finding the Fourth Proportional to 61,148.80, 91,777.20 and 36,157.60

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Solution

The fourth proportional to 61,148.80, 91,777.20 and 36,157.60 is: 54,268.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,148.80 : 91,777.20 = 36,157.60 : x
  2. Step 2: Convert to fraction form
    61,148.80/91,777.20 = 36,157.60/x
  3. Step 3: Cross multiply
    61,148.80x = 91,777.20 × 36,157.60
  4. Step 4: Simplify right side
    61,148.80x = 3,318,443,286.72
  5. Step 5: Solve for x
    x = 3,318,443,286.72/61,148.80
  6. Step 6: Final answer
    x = 54,268.33

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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.