Home / 82,203.81-113,519.61-77,725.86

Finding the Fourth Proportional to 82,203.81, 113,519.61 and 77,725.86

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Solution

The fourth proportional to 82,203.81, 113,519.61 and 77,725.86 is: 107,335.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,203.81 : 113,519.61 = 77,725.86 : x
  2. Step 2: Convert to fraction form
    82,203.81/113,519.61 = 77,725.86/x
  3. Step 3: Cross multiply
    82,203.81x = 113,519.61 × 77,725.86
  4. Step 4: Simplify right side
    82,203.81x = 8,823,409,314.11
  5. Step 5: Solve for x
    x = 8,823,409,314.11/82,203.81
  6. Step 6: Final answer
    x = 107,335.77

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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.