Home / 99,403.21-148,990.83-49,371.49

Finding the Fourth Proportional to 99,403.21, 148,990.83 and 49,371.49

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Solution

The fourth proportional to 99,403.21, 148,990.83 and 49,371.49 is: 74,000.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,403.21 : 148,990.83 = 49,371.49 : x
  2. Step 2: Convert to fraction form
    99,403.21/148,990.83 = 49,371.49/x
  3. Step 3: Cross multiply
    99,403.21x = 148,990.83 × 49,371.49
  4. Step 4: Simplify right side
    99,403.21x = 7,355,899,273.44
  5. Step 5: Solve for x
    x = 7,355,899,273.44/99,403.21
  6. Step 6: Final answer
    x = 74,000.62

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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.