Home / 88,977.72-122,719.94-57,149.58

Finding the Fourth Proportional to 88,977.72, 122,719.94 and 57,149.58

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Solution

The fourth proportional to 88,977.72, 122,719.94 and 57,149.58 is: 78,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,977.72 : 122,719.94 = 57,149.58 : x
  2. Step 2: Convert to fraction form
    88,977.72/122,719.94 = 57,149.58/x
  3. Step 3: Cross multiply
    88,977.72x = 122,719.94 × 57,149.58
  4. Step 4: Simplify right side
    88,977.72x = 7,013,392,129.28
  5. Step 5: Solve for x
    x = 7,013,392,129.28/88,977.72
  6. Step 6: Final answer
    x = 78,821.90

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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.