Home / 74,857.14-111,712.82-66,869.96

Finding the Fourth Proportional to 74,857.14, 111,712.82 and 66,869.96

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Solution

The fourth proportional to 74,857.14, 111,712.82 and 66,869.96 is: 99,793.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,857.14 : 111,712.82 = 66,869.96 : x
  2. Step 2: Convert to fraction form
    74,857.14/111,712.82 = 66,869.96/x
  3. Step 3: Cross multiply
    74,857.14x = 111,712.82 × 66,869.96
  4. Step 4: Simplify right side
    74,857.14x = 7,470,231,581.66
  5. Step 5: Solve for x
    x = 7,470,231,581.66/74,857.14
  6. Step 6: Final answer
    x = 99,793.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.