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Finding the Fourth Proportional to 84,864.59, 127,310.65 and 28,708.11

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Solution

The fourth proportional to 84,864.59, 127,310.65 and 28,708.11 is: 43,066.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,864.59 : 127,310.65 = 28,708.11 : x
  2. Step 2: Convert to fraction form
    84,864.59/127,310.65 = 28,708.11/x
  3. Step 3: Cross multiply
    84,864.59x = 127,310.65 × 28,708.11
  4. Step 4: Simplify right side
    84,864.59x = 3,654,848,072.60
  5. Step 5: Solve for x
    x = 3,654,848,072.60/84,864.59
  6. Step 6: Final answer
    x = 43,066.82

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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.