Home / 79,721.88-119,582.82-69,457.56

Finding the Fourth Proportional to 79,721.88, 119,582.82 and 69,457.56

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Solution

The fourth proportional to 79,721.88, 119,582.82 and 69,457.56 is: 104,186.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,721.88 : 119,582.82 = 69,457.56 : x
  2. Step 2: Convert to fraction form
    79,721.88/119,582.82 = 69,457.56/x
  3. Step 3: Cross multiply
    79,721.88x = 119,582.82 × 69,457.56
  4. Step 4: Simplify right side
    79,721.88x = 8,305,930,895.12
  5. Step 5: Solve for x
    x = 8,305,930,895.12/79,721.88
  6. Step 6: Final answer
    x = 104,186.34

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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.