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Finding the Fourth Proportional to 29,767.12, 44,649.40 and 8,990

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Solution

The fourth proportional to 29,767.12, 44,649.40 and 8,990 is: 13,484.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,767.12 : 44,649.40 = 8,990 : x
  2. Step 2: Convert to fraction form
    29,767.12/44,649.40 = 8,990/x
  3. Step 3: Cross multiply
    29,767.12x = 44,649.40 × 8,990
  4. Step 4: Simplify right side
    29,767.12x = 401,398,106
  5. Step 5: Solve for x
    x = 401,398,106/29,767.12
  6. Step 6: Final answer
    x = 13,484.61

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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.