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Finding the Fourth Proportional to 45,861.03, 68,780 and 17,771.45

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Solution

The fourth proportional to 45,861.03, 68,780 and 17,771.45 is: 26,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,861.03 : 68,780 = 17,771.45 : x
  2. Step 2: Convert to fraction form
    45,861.03/68,780 = 17,771.45/x
  3. Step 3: Cross multiply
    45,861.03x = 68,780 × 17,771.45
  4. Step 4: Simplify right side
    45,861.03x = 1,222,320,331
  5. Step 5: Solve for x
    x = 1,222,320,331/45,861.03
  6. Step 6: Final answer
    x = 26,652.70

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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.