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Finding the Fourth Proportional to 66,546.20, 91,843 and 38,251.28

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Solution

The fourth proportional to 66,546.20, 91,843 and 38,251.28 is: 52,792.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,546.20 : 91,843 = 38,251.28 : x
  2. Step 2: Convert to fraction form
    66,546.20/91,843 = 38,251.28/x
  3. Step 3: Cross multiply
    66,546.20x = 91,843 × 38,251.28
  4. Step 4: Simplify right side
    66,546.20x = 3,513,112,309.04
  5. Step 5: Solve for x
    x = 3,513,112,309.04/66,546.20
  6. Step 6: Final answer
    x = 52,792.08

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1.5x scale

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.