Home / 30,126.43-45,191.87-7,939.66

Finding the Fourth Proportional to 30,126.43, 45,191.87 and 7,939.66

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Solution

The fourth proportional to 30,126.43, 45,191.87 and 7,939.66 is: 11,910.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,126.43 : 45,191.87 = 7,939.66 : x
  2. Step 2: Convert to fraction form
    30,126.43/45,191.87 = 7,939.66/x
  3. Step 3: Cross multiply
    30,126.43x = 45,191.87 × 7,939.66
  4. Step 4: Simplify right side
    30,126.43x = 358,808,082.56
  5. Step 5: Solve for x
    x = 358,808,082.56/30,126.43
  6. Step 6: Final answer
    x = 11,910.08

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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.