Home / 45,431.78-68,158.60-19,144.04

Finding the Fourth Proportional to 45,431.78, 68,158.60 and 19,144.04

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Solution

The fourth proportional to 45,431.78, 68,158.60 and 19,144.04 is: 28,720.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,431.78 : 68,158.60 = 19,144.04 : x
  2. Step 2: Convert to fraction form
    45,431.78/68,158.60 = 19,144.04/x
  3. Step 3: Cross multiply
    45,431.78x = 68,158.60 × 19,144.04
  4. Step 4: Simplify right side
    45,431.78x = 1,304,830,964.74
  5. Step 5: Solve for x
    x = 1,304,830,964.74/45,431.78
  6. Step 6: Final answer
    x = 28,720.67

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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.