Home / 68,742.68-103,090.94-30,768.16

Finding the Fourth Proportional to 68,742.68, 103,090.94 and 30,768.16

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Solution

The fourth proportional to 68,742.68, 103,090.94 and 30,768.16 is: 46,141.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,742.68 : 103,090.94 = 30,768.16 : x
  2. Step 2: Convert to fraction form
    68,742.68/103,090.94 = 30,768.16/x
  3. Step 3: Cross multiply
    68,742.68x = 103,090.94 × 30,768.16
  4. Step 4: Simplify right side
    68,742.68x = 3,171,918,536.47
  5. Step 5: Solve for x
    x = 3,171,918,536.47/68,742.68
  6. Step 6: Final answer
    x = 46,141.91

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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.