Home / 68,776.16-103,157.33-18,861.28

Finding the Fourth Proportional to 68,776.16, 103,157.33 and 18,861.28

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Solution

The fourth proportional to 68,776.16, 103,157.33 and 18,861.28 is: 28,290.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,776.16 : 103,157.33 = 18,861.28 : x
  2. Step 2: Convert to fraction form
    68,776.16/103,157.33 = 18,861.28/x
  3. Step 3: Cross multiply
    68,776.16x = 103,157.33 × 18,861.28
  4. Step 4: Simplify right side
    68,776.16x = 1,945,679,408.78
  5. Step 5: Solve for x
    x = 1,945,679,408.78/68,776.16
  6. Step 6: Final answer
    x = 28,290.03

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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.