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Finding the Fourth Proportional to 75,649.89, 113,474.04 and 19,489.77

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Solution

The fourth proportional to 75,649.89, 113,474.04 and 19,489.77 is: 29,234.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,649.89 : 113,474.04 = 19,489.77 : x
  2. Step 2: Convert to fraction form
    75,649.89/113,474.04 = 19,489.77/x
  3. Step 3: Cross multiply
    75,649.89x = 113,474.04 × 19,489.77
  4. Step 4: Simplify right side
    75,649.89x = 2,211,582,940.57
  5. Step 5: Solve for x
    x = 2,211,582,940.57/75,649.89
  6. Step 6: Final answer
    x = 29,234.45

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Double scale
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Similar ratio
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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.