Home / 72,091.11-107,985.87-57,974.70

Finding the Fourth Proportional to 72,091.11, 107,985.87 and 57,974.70

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Solution

The fourth proportional to 72,091.11, 107,985.87 and 57,974.70 is: 86,840.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,091.11 : 107,985.87 = 57,974.70 : x
  2. Step 2: Convert to fraction form
    72,091.11/107,985.87 = 57,974.70/x
  3. Step 3: Cross multiply
    72,091.11x = 107,985.87 × 57,974.70
  4. Step 4: Simplify right side
    72,091.11x = 6,260,448,417.49
  5. Step 5: Solve for x
    x = 6,260,448,417.49/72,091.11
  6. Step 6: Final answer
    x = 86,840.78

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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.