Home / 68,749.60-103,090.38-21,996.40

Finding the Fourth Proportional to 68,749.60, 103,090.38 and 21,996.40

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Solution

The fourth proportional to 68,749.60, 103,090.38 and 21,996.40 is: 32,983.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,749.60 : 103,090.38 = 21,996.40 : x
  2. Step 2: Convert to fraction form
    68,749.60/103,090.38 = 21,996.40/x
  3. Step 3: Cross multiply
    68,749.60x = 103,090.38 × 21,996.40
  4. Step 4: Simplify right side
    68,749.60x = 2,267,617,234.63
  5. Step 5: Solve for x
    x = 2,267,617,234.63/68,749.60
  6. Step 6: Final answer
    x = 32,983.72

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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.