Home / 71,851.09-99,120.16-55,825.87

Finding the Fourth Proportional to 71,851.09, 99,120.16 and 55,825.87

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Solution

The fourth proportional to 71,851.09, 99,120.16 and 55,825.87 is: 77,013.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,851.09 : 99,120.16 = 55,825.87 : x
  2. Step 2: Convert to fraction form
    71,851.09/99,120.16 = 55,825.87/x
  3. Step 3: Cross multiply
    71,851.09x = 99,120.16 × 55,825.87
  4. Step 4: Simplify right side
    71,851.09x = 5,533,469,166.54
  5. Step 5: Solve for x
    x = 5,533,469,166.54/71,851.09
  6. Step 6: Final answer
    x = 77,013.02

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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.