Home / 68,917.54-103,390.66-21,530.72

Finding the Fourth Proportional to 68,917.54, 103,390.66 and 21,530.72

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Solution

The fourth proportional to 68,917.54, 103,390.66 and 21,530.72 is: 32,300.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,917.54 : 103,390.66 = 21,530.72 : x
  2. Step 2: Convert to fraction form
    68,917.54/103,390.66 = 21,530.72/x
  3. Step 3: Cross multiply
    68,917.54x = 103,390.66 × 21,530.72
  4. Step 4: Simplify right side
    68,917.54x = 2,226,075,221.84
  5. Step 5: Solve for x
    x = 2,226,075,221.84/68,917.54
  6. Step 6: Final answer
    x = 32,300.56

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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.