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Finding the Fourth Proportional to 45,858.78, 68,776.63 and 17,769.20

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Solution

The fourth proportional to 45,858.78, 68,776.63 and 17,769.20 is: 26,649.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,858.78 : 68,776.63 = 17,769.20 : x
  2. Step 2: Convert to fraction form
    45,858.78/68,776.63 = 17,769.20/x
  3. Step 3: Cross multiply
    45,858.78x = 68,776.63 × 17,769.20
  4. Step 4: Simplify right side
    45,858.78x = 1,222,105,305.49
  5. Step 5: Solve for x
    x = 1,222,105,305.49/45,858.78
  6. Step 6: Final answer
    x = 26,649.32

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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.