Home / 82,459.97-113,744.13-72,869.08

Finding the Fourth Proportional to 82,459.97, 113,744.13 and 72,869.08

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Solution

The fourth proportional to 82,459.97, 113,744.13 and 72,869.08 is: 100,514.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,459.97 : 113,744.13 = 72,869.08 : x
  2. Step 2: Convert to fraction form
    82,459.97/113,744.13 = 72,869.08/x
  3. Step 3: Cross multiply
    82,459.97x = 113,744.13 × 72,869.08
  4. Step 4: Simplify right side
    82,459.97x = 8,288,429,539.78
  5. Step 5: Solve for x
    x = 8,288,429,539.78/82,459.97
  6. Step 6: Final answer
    x = 100,514.58

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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.