Home / 39,720.68-54,850.14-29,631.60

Finding the Fourth Proportional to 39,720.68, 54,850.14 and 29,631.60

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Solution

The fourth proportional to 39,720.68, 54,850.14 and 29,631.60 is: 40,918.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.68 : 54,850.14 = 29,631.60 : x
  2. Step 2: Convert to fraction form
    39,720.68/54,850.14 = 29,631.60/x
  3. Step 3: Cross multiply
    39,720.68x = 54,850.14 × 29,631.60
  4. Step 4: Simplify right side
    39,720.68x = 1,625,297,408.42
  5. Step 5: Solve for x
    x = 1,625,297,408.42/39,720.68
  6. Step 6: Final answer
    x = 40,918.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.