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Finding the Fourth Proportional to 66,149.28, 91,288.08 and 37,853.28

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Solution

The fourth proportional to 66,149.28, 91,288.08 and 37,853.28 is: 52,238.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,149.28 : 91,288.08 = 37,853.28 : x
  2. Step 2: Convert to fraction form
    66,149.28/91,288.08 = 37,853.28/x
  3. Step 3: Cross multiply
    66,149.28x = 91,288.08 × 37,853.28
  4. Step 4: Simplify right side
    66,149.28x = 3,455,553,252.90
  5. Step 5: Solve for x
    x = 3,455,553,252.90/66,149.28
  6. Step 6: Final answer
    x = 52,238.71

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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.