Home / 68,742.10-103,113.07-18,822.58

Finding the Fourth Proportional to 68,742.10, 103,113.07 and 18,822.58

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Solution

The fourth proportional to 68,742.10, 103,113.07 and 18,822.58 is: 28,233.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,742.10 : 103,113.07 = 18,822.58 : x
  2. Step 2: Convert to fraction form
    68,742.10/103,113.07 = 18,822.58/x
  3. Step 3: Cross multiply
    68,742.10x = 103,113.07 × 18,822.58
  4. Step 4: Simplify right side
    68,742.10x = 1,940,854,009.12
  5. Step 5: Solve for x
    x = 1,940,854,009.12/68,742.10
  6. Step 6: Final answer
    x = 28,233.85

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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.