Home / 45,507.10-68,207.04-20,517.89

Finding the Fourth Proportional to 45,507.10, 68,207.04 and 20,517.89

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Solution

The fourth proportional to 45,507.10, 68,207.04 and 20,517.89 is: 30,752.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,507.10 : 68,207.04 = 20,517.89 : x
  2. Step 2: Convert to fraction form
    45,507.10/68,207.04 = 20,517.89/x
  3. Step 3: Cross multiply
    45,507.10x = 68,207.04 × 20,517.89
  4. Step 4: Simplify right side
    45,507.10x = 1,399,464,842.35
  5. Step 5: Solve for x
    x = 1,399,464,842.35/45,507.10
  6. Step 6: Final answer
    x = 30,752.67

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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.