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Finding the Fourth Proportional to 74,575.80, 111,777.30 and 30,180.60

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Solution

The fourth proportional to 74,575.80, 111,777.30 and 30,180.60 is: 45,235.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,575.80 : 111,777.30 = 30,180.60 : x
  2. Step 2: Convert to fraction form
    74,575.80/111,777.30 = 30,180.60/x
  3. Step 3: Cross multiply
    74,575.80x = 111,777.30 × 30,180.60
  4. Step 4: Simplify right side
    74,575.80x = 3,373,505,980.38
  5. Step 5: Solve for x
    x = 3,373,505,980.38/74,575.80
  6. Step 6: Final answer
    x = 45,235.93

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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.