Home / 51,004.90-70,375.23-30,861.28

Finding the Fourth Proportional to 51,004.90, 70,375.23 and 30,861.28

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Solution

The fourth proportional to 51,004.90, 70,375.23 and 30,861.28 is: 42,581.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,004.90 : 70,375.23 = 30,861.28 : x
  2. Step 2: Convert to fraction form
    51,004.90/70,375.23 = 30,861.28/x
  3. Step 3: Cross multiply
    51,004.90x = 70,375.23 × 30,861.28
  4. Step 4: Simplify right side
    51,004.90x = 2,171,869,678.09
  5. Step 5: Solve for x
    x = 2,171,869,678.09/51,004.90
  6. Step 6: Final answer
    x = 42,581.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.