Home / 81,201.42-121,826.70-57,554.69

Finding the Fourth Proportional to 81,201.42, 121,826.70 and 57,554.69

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Solution

The fourth proportional to 81,201.42, 121,826.70 and 57,554.69 is: 86,349.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,201.42 : 121,826.70 = 57,554.69 : x
  2. Step 2: Convert to fraction form
    81,201.42/121,826.70 = 57,554.69/x
  3. Step 3: Cross multiply
    81,201.42x = 121,826.70 × 57,554.69
  4. Step 4: Simplify right side
    81,201.42x = 7,011,697,343.09
  5. Step 5: Solve for x
    x = 7,011,697,343.09/81,201.42
  6. Step 6: Final answer
    x = 86,349.44

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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.