Home / 42,855.10-64,324.11-20,684.08

Finding the Fourth Proportional to 42,855.10, 64,324.11 and 20,684.08

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Solution

The fourth proportional to 42,855.10, 64,324.11 and 20,684.08 is: 31,046.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,855.10 : 64,324.11 = 20,684.08 : x
  2. Step 2: Convert to fraction form
    42,855.10/64,324.11 = 20,684.08/x
  3. Step 3: Cross multiply
    42,855.10x = 64,324.11 × 20,684.08
  4. Step 4: Simplify right side
    42,855.10x = 1,330,485,195.14
  5. Step 5: Solve for x
    x = 1,330,485,195.14/42,855.10
  6. Step 6: Final answer
    x = 31,046.14

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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.