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Finding the Fourth Proportional to 61,540.90, 92,238.45 and 45,940.30

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Solution

The fourth proportional to 61,540.90, 92,238.45 and 45,940.30 is: 68,856.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,540.90 : 92,238.45 = 45,940.30 : x
  2. Step 2: Convert to fraction form
    61,540.90/92,238.45 = 45,940.30/x
  3. Step 3: Cross multiply
    61,540.90x = 92,238.45 × 45,940.30
  4. Step 4: Simplify right side
    61,540.90x = 4,237,462,064.54
  5. Step 5: Solve for x
    x = 4,237,462,064.54/61,540.90
  6. Step 6: Final answer
    x = 68,856.03

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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.