Home / 81,222.93-121,857.75-41,240.34

Finding the Fourth Proportional to 81,222.93, 121,857.75 and 41,240.34

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Solution

The fourth proportional to 81,222.93, 121,857.75 and 41,240.34 is: 61,872.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,222.93 : 121,857.75 = 41,240.34 : x
  2. Step 2: Convert to fraction form
    81,222.93/121,857.75 = 41,240.34/x
  3. Step 3: Cross multiply
    81,222.93x = 121,857.75 × 41,240.34
  4. Step 4: Simplify right side
    81,222.93x = 5,025,455,041.64
  5. Step 5: Solve for x
    x = 5,025,455,041.64/81,222.93
  6. Step 6: Final answer
    x = 61,872.37

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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.