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Finding the Fourth Proportional to 84,700.80, 127,066.24 and 28,546.56

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Solution

The fourth proportional to 84,700.80, 127,066.24 and 28,546.56 is: 42,824.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,700.80 : 127,066.24 = 28,546.56 : x
  2. Step 2: Convert to fraction form
    84,700.80/127,066.24 = 28,546.56/x
  3. Step 3: Cross multiply
    84,700.80x = 127,066.24 × 28,546.56
  4. Step 4: Simplify right side
    84,700.80x = 3,627,304,044.13
  5. Step 5: Solve for x
    x = 3,627,304,044.13/84,700.80
  6. Step 6: Final answer
    x = 42,824.91

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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.