Home / 39,766.31-54,878.56-21,861.77

Finding the Fourth Proportional to 39,766.31, 54,878.56 and 21,861.77

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Solution

The fourth proportional to 39,766.31, 54,878.56 and 21,861.77 is: 30,169.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,766.31 : 54,878.56 = 21,861.77 : x
  2. Step 2: Convert to fraction form
    39,766.31/54,878.56 = 21,861.77/x
  3. Step 3: Cross multiply
    39,766.31x = 54,878.56 × 21,861.77
  4. Step 4: Simplify right side
    39,766.31x = 1,199,742,072.95
  5. Step 5: Solve for x
    x = 1,199,742,072.95/39,766.31
  6. Step 6: Final answer
    x = 30,169.81

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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.