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Finding the Fourth Proportional to 75,297.72, 112,944.66 and 19,894.20

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Solution

The fourth proportional to 75,297.72, 112,944.66 and 19,894.20 is: 29,840.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,297.72 : 112,944.66 = 19,894.20 : x
  2. Step 2: Convert to fraction form
    75,297.72/112,944.66 = 19,894.20/x
  3. Step 3: Cross multiply
    75,297.72x = 112,944.66 × 19,894.20
  4. Step 4: Simplify right side
    75,297.72x = 2,246,943,654.97
  5. Step 5: Solve for x
    x = 2,246,943,654.97/75,297.72
  6. Step 6: Final answer
    x = 29,840.79

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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.