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Finding the Fourth Proportional to 75,863.70, 113,795.55 and 19,699.20

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Solution

The fourth proportional to 75,863.70, 113,795.55 and 19,699.20 is: 29,548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,863.70 : 113,795.55 = 19,699.20 : x
  2. Step 2: Convert to fraction form
    75,863.70/113,795.55 = 19,699.20/x
  3. Step 3: Cross multiply
    75,863.70x = 113,795.55 × 19,699.20
  4. Step 4: Simplify right side
    75,863.70x = 2,241,681,298.56
  5. Step 5: Solve for x
    x = 2,241,681,298.56/75,863.70
  6. Step 6: Final answer
    x = 29,548.80

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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.