Home / 71,881.12-107,661.20-55,117.68

Finding the Fourth Proportional to 71,881.12, 107,661.20 and 55,117.68

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Solution

The fourth proportional to 71,881.12, 107,661.20 and 55,117.68 is: 82,553.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,881.12 : 107,661.20 = 55,117.68 : x
  2. Step 2: Convert to fraction form
    71,881.12/107,661.20 = 55,117.68/x
  3. Step 3: Cross multiply
    71,881.12x = 107,661.20 × 55,117.68
  4. Step 4: Simplify right side
    71,881.12x = 5,934,035,570.02
  5. Step 5: Solve for x
    x = 5,934,035,570.02/71,881.12
  6. Step 6: Final answer
    x = 82,553.47

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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.