Home / 84,849.84-126,654.48-78,682.32

Finding the Fourth Proportional to 84,849.84, 126,654.48 and 78,682.32

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Solution

The fourth proportional to 84,849.84, 126,654.48 and 78,682.32 is: 117,448.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,849.84 : 126,654.48 = 78,682.32 : x
  2. Step 2: Convert to fraction form
    84,849.84/126,654.48 = 78,682.32/x
  3. Step 3: Cross multiply
    84,849.84x = 126,654.48 × 78,682.32
  4. Step 4: Simplify right side
    84,849.84x = 9,965,468,324.79
  5. Step 5: Solve for x
    x = 9,965,468,324.79/84,849.84
  6. Step 6: Final answer
    x = 117,448.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.