Home / 82,459.47-113,743.44-72,868.58

Finding the Fourth Proportional to 82,459.47, 113,743.44 and 72,868.58

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Solution

The fourth proportional to 82,459.47, 113,743.44 and 72,868.58 is: 100,513.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,459.47 : 113,743.44 = 72,868.58 : x
  2. Step 2: Convert to fraction form
    82,459.47/113,743.44 = 72,868.58/x
  3. Step 3: Cross multiply
    82,459.47x = 113,743.44 × 72,868.58
  4. Step 4: Simplify right side
    82,459.47x = 8,288,322,388.40
  5. Step 5: Solve for x
    x = 8,288,322,388.40/82,459.47
  6. Step 6: Final answer
    x = 100,513.89

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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.