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Finding the Fourth Proportional to 61,663.50, 85,018.14 and 50,321.52

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Solution

The fourth proportional to 61,663.50, 85,018.14 and 50,321.52 is: 69,380.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,663.50 : 85,018.14 = 50,321.52 : x
  2. Step 2: Convert to fraction form
    61,663.50/85,018.14 = 50,321.52/x
  3. Step 3: Cross multiply
    61,663.50x = 85,018.14 × 50,321.52
  4. Step 4: Simplify right side
    61,663.50x = 4,278,242,032.37
  5. Step 5: Solve for x
    x = 4,278,242,032.37/61,663.50
  6. Step 6: Final answer
    x = 69,380.46

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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.