Home / 66,042.90-91,138.20-35,828.28

Finding the Fourth Proportional to 66,042.90, 91,138.20 and 35,828.28

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Solution

The fourth proportional to 66,042.90, 91,138.20 and 35,828.28 is: 49,442.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,042.90 : 91,138.20 = 35,828.28 : x
  2. Step 2: Convert to fraction form
    66,042.90/91,138.20 = 35,828.28/x
  3. Step 3: Cross multiply
    66,042.90x = 91,138.20 × 35,828.28
  4. Step 4: Simplify right side
    66,042.90x = 3,265,324,948.30
  5. Step 5: Solve for x
    x = 3,265,324,948.30/66,042.90
  6. Step 6: Final answer
    x = 49,442.48

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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.