Home / 66,394.48-91,644.60-39,541.36

Finding the Fourth Proportional to 66,394.48, 91,644.60 and 39,541.36

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Solution

The fourth proportional to 66,394.48, 91,644.60 and 39,541.36 is: 54,579.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,394.48 : 91,644.60 = 39,541.36 : x
  2. Step 2: Convert to fraction form
    66,394.48/91,644.60 = 39,541.36/x
  3. Step 3: Cross multiply
    66,394.48x = 91,644.60 × 39,541.36
  4. Step 4: Simplify right side
    66,394.48x = 3,623,752,120.66
  5. Step 5: Solve for x
    x = 3,623,752,120.66/66,394.48
  6. Step 6: Final answer
    x = 54,579.12

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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.