Home / 68,782.20-103,043.70-35,388.60

Finding the Fourth Proportional to 68,782.20, 103,043.70 and 35,388.60

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Solution

The fourth proportional to 68,782.20, 103,043.70 and 35,388.60 is: 53,016.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,782.20 : 103,043.70 = 35,388.60 : x
  2. Step 2: Convert to fraction form
    68,782.20/103,043.70 = 35,388.60/x
  3. Step 3: Cross multiply
    68,782.20x = 103,043.70 × 35,388.60
  4. Step 4: Simplify right side
    68,782.20x = 3,646,572,281.82
  5. Step 5: Solve for x
    x = 3,646,572,281.82/68,782.20
  6. Step 6: Final answer
    x = 53,016.22

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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.