Home / 43,110.12-64,665.20-11,945.38

Finding the Fourth Proportional to 43,110.12, 64,665.20 and 11,945.38

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Solution

The fourth proportional to 43,110.12, 64,665.20 and 11,945.38 is: 17,918.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,110.12 : 64,665.20 = 11,945.38 : x
  2. Step 2: Convert to fraction form
    43,110.12/64,665.20 = 11,945.38/x
  3. Step 3: Cross multiply
    43,110.12x = 64,665.20 × 11,945.38
  4. Step 4: Simplify right side
    43,110.12x = 772,450,386.78
  5. Step 5: Solve for x
    x = 772,450,386.78/43,110.12
  6. Step 6: Final answer
    x = 17,918.08

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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.