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Finding the Fourth Proportional to 61,649.91, 92,479.01 and 21,664.04

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Solution

The fourth proportional to 61,649.91, 92,479.01 and 21,664.04 is: 32,497.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,649.91 : 92,479.01 = 21,664.04 : x
  2. Step 2: Convert to fraction form
    61,649.91/92,479.01 = 21,664.04/x
  3. Step 3: Cross multiply
    61,649.91x = 92,479.01 × 21,664.04
  4. Step 4: Simplify right side
    61,649.91x = 2,003,468,401.09
  5. Step 5: Solve for x
    x = 2,003,468,401.09/61,649.91
  6. Step 6: Final answer
    x = 32,497.51

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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.