Home / 81,443.77-122,167.27-53,541.79

Finding the Fourth Proportional to 81,443.77, 122,167.27 and 53,541.79

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Solution

The fourth proportional to 81,443.77, 122,167.27 and 53,541.79 is: 80,313.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,443.77 : 122,167.27 = 53,541.79 : x
  2. Step 2: Convert to fraction form
    81,443.77/122,167.27 = 53,541.79/x
  3. Step 3: Cross multiply
    81,443.77x = 122,167.27 × 53,541.79
  4. Step 4: Simplify right side
    81,443.77x = 6,541,054,315.21
  5. Step 5: Solve for x
    x = 6,541,054,315.21/81,443.77
  6. Step 6: Final answer
    x = 80,313.75

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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.