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Finding the Fourth Proportional to 61,245.60, 84,512.64 and 34,391.07

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Solution

The fourth proportional to 61,245.60, 84,512.64 and 34,391.07 is: 47,456.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,245.60 : 84,512.64 = 34,391.07 : x
  2. Step 2: Convert to fraction form
    61,245.60/84,512.64 = 34,391.07/x
  3. Step 3: Cross multiply
    61,245.60x = 84,512.64 × 34,391.07
  4. Step 4: Simplify right side
    61,245.60x = 2,906,480,118.12
  5. Step 5: Solve for x
    x = 2,906,480,118.12/61,245.60
  6. Step 6: Final answer
    x = 47,456.15

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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.