Home / 81,031.77-121,495.01-33,633.81

Finding the Fourth Proportional to 81,031.77, 121,495.01 and 33,633.81

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Solution

The fourth proportional to 81,031.77, 121,495.01 and 33,633.81 is: 50,428.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,031.77 : 121,495.01 = 33,633.81 : x
  2. Step 2: Convert to fraction form
    81,031.77/121,495.01 = 33,633.81/x
  3. Step 3: Cross multiply
    81,031.77x = 121,495.01 × 33,633.81
  4. Step 4: Simplify right side
    81,031.77x = 4,086,339,914.12
  5. Step 5: Solve for x
    x = 4,086,339,914.12/81,031.77
  6. Step 6: Final answer
    x = 50,428.86

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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.