Home / 61,112.57-91,664.88-21,130.43

Finding the Fourth Proportional to 61,112.57, 91,664.88 and 21,130.43

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Solution

The fourth proportional to 61,112.57, 91,664.88 and 21,130.43 is: 31,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,112.57 : 91,664.88 = 21,130.43 : x
  2. Step 2: Convert to fraction form
    61,112.57/91,664.88 = 21,130.43/x
  3. Step 3: Cross multiply
    61,112.57x = 91,664.88 × 21,130.43
  4. Step 4: Simplify right side
    61,112.57x = 1,936,917,871.97
  5. Step 5: Solve for x
    x = 1,936,917,871.97/61,112.57
  6. Step 6: Final answer
    x = 31,694.27

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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.