Home / 75,809.48-104,756.10-72,167.72

Finding the Fourth Proportional to 75,809.48, 104,756.10 and 72,167.72

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Solution

The fourth proportional to 75,809.48, 104,756.10 and 72,167.72 is: 99,723.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,809.48 : 104,756.10 = 72,167.72 : x
  2. Step 2: Convert to fraction form
    75,809.48/104,756.10 = 72,167.72/x
  3. Step 3: Cross multiply
    75,809.48x = 104,756.10 × 72,167.72
  4. Step 4: Simplify right side
    75,809.48x = 7,560,008,893.09
  5. Step 5: Solve for x
    x = 7,560,008,893.09/75,809.48
  6. Step 6: Final answer
    x = 99,723.79

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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.