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Finding the Fourth Proportional to 45,640.90, 62,978.21 and 25,495.29

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Solution

The fourth proportional to 45,640.90, 62,978.21 and 25,495.29 is: 35,180.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,640.90 : 62,978.21 = 25,495.29 : x
  2. Step 2: Convert to fraction form
    45,640.90/62,978.21 = 25,495.29/x
  3. Step 3: Cross multiply
    45,640.90x = 62,978.21 × 25,495.29
  4. Step 4: Simplify right side
    45,640.90x = 1,605,647,695.76
  5. Step 5: Solve for x
    x = 1,605,647,695.76/45,640.90
  6. Step 6: Final answer
    x = 35,180.02

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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.