Home / 68,748.89-103,123.40-18,829.40

Finding the Fourth Proportional to 68,748.89, 103,123.40 and 18,829.40

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Solution

The fourth proportional to 68,748.89, 103,123.40 and 18,829.40 is: 28,244.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,748.89 : 103,123.40 = 18,829.40 : x
  2. Step 2: Convert to fraction form
    68,748.89/103,123.40 = 18,829.40/x
  3. Step 3: Cross multiply
    68,748.89x = 103,123.40 × 18,829.40
  4. Step 4: Simplify right side
    68,748.89x = 1,941,751,138.20
  5. Step 5: Solve for x
    x = 1,941,751,138.20/68,748.89
  6. Step 6: Final answer
    x = 28,244.11

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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.