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Finding the Fourth Proportional to 45,792.80, 68,692.40 and 18,087.20

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Solution

The fourth proportional to 45,792.80, 68,692.40 and 18,087.20 is: 27,132.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,792.80 : 68,692.40 = 18,087.20 : x
  2. Step 2: Convert to fraction form
    45,792.80/68,692.40 = 18,087.20/x
  3. Step 3: Cross multiply
    45,792.80x = 68,692.40 × 18,087.20
  4. Step 4: Simplify right side
    45,792.80x = 1,242,453,177.28
  5. Step 5: Solve for x
    x = 1,242,453,177.28/45,792.80
  6. Step 6: Final answer
    x = 27,132.06

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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.