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Finding the Fourth Proportional to 45,991.64, 68,987.28 and 12,711.64

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Solution

The fourth proportional to 45,991.64, 68,987.28 and 12,711.64 is: 19,067.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,991.64 : 68,987.28 = 12,711.64 : x
  2. Step 2: Convert to fraction form
    45,991.64/68,987.28 = 12,711.64/x
  3. Step 3: Cross multiply
    45,991.64x = 68,987.28 × 12,711.64
  4. Step 4: Simplify right side
    45,991.64x = 876,941,467.94
  5. Step 5: Solve for x
    x = 876,941,467.94/45,991.64
  6. Step 6: Final answer
    x = 19,067.41

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1.5x scale

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.