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Finding the Fourth Proportional to 61,781.52, 85,194.84 and 52,858.56

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Solution

The fourth proportional to 61,781.52, 85,194.84 and 52,858.56 is: 72,890.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,781.52 : 85,194.84 = 52,858.56 : x
  2. Step 2: Convert to fraction form
    61,781.52/85,194.84 = 52,858.56/x
  3. Step 3: Cross multiply
    61,781.52x = 85,194.84 × 52,858.56
  4. Step 4: Simplify right side
    61,781.52x = 4,503,276,561.83
  5. Step 5: Solve for x
    x = 4,503,276,561.83/61,781.52
  6. Step 6: Final answer
    x = 72,890.35

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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.