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Finding the Fourth Proportional to 75,887.48, 113,832.90 and 19,729.80

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Solution

The fourth proportional to 75,887.48, 113,832.90 and 19,729.80 is: 29,595.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,887.48 : 113,832.90 = 19,729.80 : x
  2. Step 2: Convert to fraction form
    75,887.48/113,832.90 = 19,729.80/x
  3. Step 3: Cross multiply
    75,887.48x = 113,832.90 × 19,729.80
  4. Step 4: Simplify right side
    75,887.48x = 2,245,900,350.42
  5. Step 5: Solve for x
    x = 2,245,900,350.42/75,887.48
  6. Step 6: Final answer
    x = 29,595.14

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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.