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Finding the Fourth Proportional to 45,900.78, 68,793.78 and 19,574.82

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Solution

The fourth proportional to 45,900.78, 68,793.78 and 19,574.82 is: 29,337.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,900.78 : 68,793.78 = 19,574.82 : x
  2. Step 2: Convert to fraction form
    45,900.78/68,793.78 = 19,574.82/x
  3. Step 3: Cross multiply
    45,900.78x = 68,793.78 × 19,574.82
  4. Step 4: Simplify right side
    45,900.78x = 1,346,625,860.62
  5. Step 5: Solve for x
    x = 1,346,625,860.62/45,900.78
  6. Step 6: Final answer
    x = 29,337.76

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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.