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Finding the Fourth Proportional to 84,410.96, 126,660.48 and 61,228.80

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Solution

The fourth proportional to 84,410.96, 126,660.48 and 61,228.80 is: 91,875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,410.96 : 126,660.48 = 61,228.80 : x
  2. Step 2: Convert to fraction form
    84,410.96/126,660.48 = 61,228.80/x
  3. Step 3: Cross multiply
    84,410.96x = 126,660.48 × 61,228.80
  4. Step 4: Simplify right side
    84,410.96x = 7,755,269,197.82
  5. Step 5: Solve for x
    x = 7,755,269,197.82/84,410.96
  6. Step 6: Final answer
    x = 91,875.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.