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Finding the Fourth Proportional to 75,380.15, 112,906.20 and 45,746.30

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Solution

The fourth proportional to 75,380.15, 112,906.20 and 45,746.30 is: 68,519.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,380.15 : 112,906.20 = 45,746.30 : x
  2. Step 2: Convert to fraction form
    75,380.15/112,906.20 = 45,746.30/x
  3. Step 3: Cross multiply
    75,380.15x = 112,906.20 × 45,746.30
  4. Step 4: Simplify right side
    75,380.15x = 5,165,040,897.06
  5. Step 5: Solve for x
    x = 5,165,040,897.06/75,380.15
  6. Step 6: Final answer
    x = 68,519.91

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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.