Home / 84,850.84-126,655.97-78,683.32

Finding the Fourth Proportional to 84,850.84, 126,655.97 and 78,683.32

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Solution

The fourth proportional to 84,850.84, 126,655.97 and 78,683.32 is: 117,449.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,850.84 : 126,655.97 = 78,683.32 : x
  2. Step 2: Convert to fraction form
    84,850.84/126,655.97 = 78,683.32/x
  3. Step 3: Cross multiply
    84,850.84x = 126,655.97 × 78,683.32
  4. Step 4: Simplify right side
    84,850.84x = 9,965,712,217.42
  5. Step 5: Solve for x
    x = 9,965,712,217.42/84,850.84
  6. Step 6: Final answer
    x = 117,449.78

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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.