Home / 74,625.20-111,840.60-30,215.60

Finding the Fourth Proportional to 74,625.20, 111,840.60 and 30,215.60

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Solution

The fourth proportional to 74,625.20, 111,840.60 and 30,215.60 is: 45,284.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,625.20 : 111,840.60 = 30,215.60 : x
  2. Step 2: Convert to fraction form
    74,625.20/111,840.60 = 30,215.60/x
  3. Step 3: Cross multiply
    74,625.20x = 111,840.60 × 30,215.60
  4. Step 4: Simplify right side
    74,625.20x = 3,379,330,833.36
  5. Step 5: Solve for x
    x = 3,379,330,833.36/74,625.20
  6. Step 6: Final answer
    x = 45,284.04

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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.