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Finding the Fourth Proportional to 75,499.90, 113,249.40 and 19,339.90

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Solution

The fourth proportional to 75,499.90, 113,249.40 and 19,339.90 is: 29,009.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,499.90 : 113,249.40 = 19,339.90 : x
  2. Step 2: Convert to fraction form
    75,499.90/113,249.40 = 19,339.90/x
  3. Step 3: Cross multiply
    75,499.90x = 113,249.40 × 19,339.90
  4. Step 4: Simplify right side
    75,499.90x = 2,190,232,071.06
  5. Step 5: Solve for x
    x = 2,190,232,071.06/75,499.90
  6. Step 6: Final answer
    x = 29,009.73

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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.