Home / 79,313.78-109,456.08-43,505.30

Finding the Fourth Proportional to 79,313.78, 109,456.08 and 43,505.30

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Solution

The fourth proportional to 79,313.78, 109,456.08 and 43,505.30 is: 60,038.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,313.78 : 109,456.08 = 43,505.30 : x
  2. Step 2: Convert to fraction form
    79,313.78/109,456.08 = 43,505.30/x
  3. Step 3: Cross multiply
    79,313.78x = 109,456.08 × 43,505.30
  4. Step 4: Simplify right side
    79,313.78x = 4,761,919,597.22
  5. Step 5: Solve for x
    x = 4,761,919,597.22/79,313.78
  6. Step 6: Final answer
    x = 60,038.99

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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.