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Finding the Fourth Proportional to 45,801.78, 68,728.67 and 19,503.78

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Solution

The fourth proportional to 45,801.78, 68,728.67 and 19,503.78 is: 29,266.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,801.78 : 68,728.67 = 19,503.78 : x
  2. Step 2: Convert to fraction form
    45,801.78/68,728.67 = 19,503.78/x
  3. Step 3: Cross multiply
    45,801.78x = 68,728.67 × 19,503.78
  4. Step 4: Simplify right side
    45,801.78x = 1,340,468,859.37
  5. Step 5: Solve for x
    x = 1,340,468,859.37/45,801.78
  6. Step 6: Final answer
    x = 29,266.74

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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.