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Finding the Fourth Proportional to 40,776.90, 61,171.44 and 14,479.44

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Solution

The fourth proportional to 40,776.90, 61,171.44 and 14,479.44 is: 21,721.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,776.90 : 61,171.44 = 14,479.44 : x
  2. Step 2: Convert to fraction form
    40,776.90/61,171.44 = 14,479.44/x
  3. Step 3: Cross multiply
    40,776.90x = 61,171.44 × 14,479.44
  4. Step 4: Simplify right side
    40,776.90x = 885,728,195.19
  5. Step 5: Solve for x
    x = 885,728,195.19/40,776.90
  6. Step 6: Final answer
    x = 21,721.32

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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.