Home / 84,261-126,428.40-39,919.44

Finding the Fourth Proportional to 84,261, 126,428.40 and 39,919.44

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Solution

The fourth proportional to 84,261, 126,428.40 and 39,919.44 is: 59,896.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,261 : 126,428.40 = 39,919.44 : x
  2. Step 2: Convert to fraction form
    84,261/126,428.40 = 39,919.44/x
  3. Step 3: Cross multiply
    84,261x = 126,428.40 × 39,919.44
  4. Step 4: Simplify right side
    84,261x = 5,046,950,928.10
  5. Step 5: Solve for x
    x = 5,046,950,928.10/84,261
  6. Step 6: Final answer
    x = 59,896.64

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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.