Home / 71,222.86-98,286.96-39,390.94

Finding the Fourth Proportional to 71,222.86, 98,286.96 and 39,390.94

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Solution

The fourth proportional to 71,222.86, 98,286.96 and 39,390.94 is: 54,359.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,222.86 : 98,286.96 = 39,390.94 : x
  2. Step 2: Convert to fraction form
    71,222.86/98,286.96 = 39,390.94/x
  3. Step 3: Cross multiply
    71,222.86x = 98,286.96 × 39,390.94
  4. Step 4: Simplify right side
    71,222.86x = 3,871,615,744.14
  5. Step 5: Solve for x
    x = 3,871,615,744.14/71,222.86
  6. Step 6: Final answer
    x = 54,359.17

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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.