Home / 68,748.32-103,125.56-18,827.31

Finding the Fourth Proportional to 68,748.32, 103,125.56 and 18,827.31

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Solution

The fourth proportional to 68,748.32, 103,125.56 and 18,827.31 is: 28,241.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,748.32 : 103,125.56 = 18,827.31 : x
  2. Step 2: Convert to fraction form
    68,748.32/103,125.56 = 18,827.31/x
  3. Step 3: Cross multiply
    68,748.32x = 103,125.56 × 18,827.31
  4. Step 4: Simplify right side
    68,748.32x = 1,941,576,887.04
  5. Step 5: Solve for x
    x = 1,941,576,887.04/68,748.32
  6. Step 6: Final answer
    x = 28,241.81

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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.