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Finding the Fourth Proportional to 84,835.80, 127,305.70 and 34,939.80

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Solution

The fourth proportional to 84,835.80, 127,305.70 and 34,939.80 is: 52,431.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,835.80 : 127,305.70 = 34,939.80 : x
  2. Step 2: Convert to fraction form
    84,835.80/127,305.70 = 34,939.80/x
  3. Step 3: Cross multiply
    84,835.80x = 127,305.70 × 34,939.80
  4. Step 4: Simplify right side
    84,835.80x = 4,448,035,696.86
  5. Step 5: Solve for x
    x = 4,448,035,696.86/84,835.80
  6. Step 6: Final answer
    x = 52,431.12

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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.