Home / 68,212.13-94,139.11-39,917.81

Finding the Fourth Proportional to 68,212.13, 94,139.11 and 39,917.81

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Solution

The fourth proportional to 68,212.13, 94,139.11 and 39,917.81 is: 55,090.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,212.13 : 94,139.11 = 39,917.81 : x
  2. Step 2: Convert to fraction form
    68,212.13/94,139.11 = 39,917.81/x
  3. Step 3: Cross multiply
    68,212.13x = 94,139.11 × 39,917.81
  4. Step 4: Simplify right side
    68,212.13x = 3,757,827,391.79
  5. Step 5: Solve for x
    x = 3,757,827,391.79/68,212.13
  6. Step 6: Final answer
    x = 55,090.31

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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.