Home / 74,257.20-111,385.80-47,991.60

Finding the Fourth Proportional to 74,257.20, 111,385.80 and 47,991.60

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Solution

The fourth proportional to 74,257.20, 111,385.80 and 47,991.60 is: 71,987.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,257.20 : 111,385.80 = 47,991.60 : x
  2. Step 2: Convert to fraction form
    74,257.20/111,385.80 = 47,991.60/x
  3. Step 3: Cross multiply
    74,257.20x = 111,385.80 × 47,991.60
  4. Step 4: Simplify right side
    74,257.20x = 5,345,582,759.28
  5. Step 5: Solve for x
    x = 5,345,582,759.28/74,257.20
  6. Step 6: Final answer
    x = 71,987.40

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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.