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Finding the Fourth Proportional to 61,845.44, 85,426.80 and 45,745.50

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Solution

The fourth proportional to 61,845.44, 85,426.80 and 45,745.50 is: 63,188.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,845.44 : 85,426.80 = 45,745.50 : x
  2. Step 2: Convert to fraction form
    61,845.44/85,426.80 = 45,745.50/x
  3. Step 3: Cross multiply
    61,845.44x = 85,426.80 × 45,745.50
  4. Step 4: Simplify right side
    61,845.44x = 3,907,891,679.40
  5. Step 5: Solve for x
    x = 3,907,891,679.40/61,845.44
  6. Step 6: Final answer
    x = 63,188.03

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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.