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Finding the Fourth Proportional to 45,853.52, 68,774.18 and 20,866.64

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Solution

The fourth proportional to 45,853.52, 68,774.18 and 20,866.64 is: 31,297.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,853.52 : 68,774.18 = 20,866.64 : x
  2. Step 2: Convert to fraction form
    45,853.52/68,774.18 = 20,866.64/x
  3. Step 3: Cross multiply
    45,853.52x = 68,774.18 × 20,866.64
  4. Step 4: Simplify right side
    45,853.52x = 1,435,086,055.36
  5. Step 5: Solve for x
    x = 1,435,086,055.36/45,853.52
  6. Step 6: Final answer
    x = 31,297.18

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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.