Home / 61,135.48-84,374.22-39,976.12

Finding the Fourth Proportional to 61,135.48, 84,374.22 and 39,976.12

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Solution

The fourth proportional to 61,135.48, 84,374.22 and 39,976.12 is: 55,171.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,135.48 : 84,374.22 = 39,976.12 : x
  2. Step 2: Convert to fraction form
    61,135.48/84,374.22 = 39,976.12/x
  3. Step 3: Cross multiply
    61,135.48x = 84,374.22 × 39,976.12
  4. Step 4: Simplify right side
    61,135.48x = 3,372,953,943.63
  5. Step 5: Solve for x
    x = 3,372,953,943.63/61,135.48
  6. Step 6: Final answer
    x = 55,171.79

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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.