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Finding the Fourth Proportional to 61,895.10, 85,221 and 54,619.68

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Solution

The fourth proportional to 61,895.10, 85,221 and 54,619.68 is: 75,203.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,895.10 : 85,221 = 54,619.68 : x
  2. Step 2: Convert to fraction form
    61,895.10/85,221 = 54,619.68/x
  3. Step 3: Cross multiply
    61,895.10x = 85,221 × 54,619.68
  4. Step 4: Simplify right side
    61,895.10x = 4,654,743,749.28
  5. Step 5: Solve for x
    x = 4,654,743,749.28/61,895.10
  6. Step 6: Final answer
    x = 75,203.75

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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.