Home / 89,420.11-123,399.72-49,133.81

Finding the Fourth Proportional to 89,420.11, 123,399.72 and 49,133.81

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Solution

The fourth proportional to 89,420.11, 123,399.72 and 49,133.81 is: 67,804.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,420.11 : 123,399.72 = 49,133.81 : x
  2. Step 2: Convert to fraction form
    89,420.11/123,399.72 = 49,133.81/x
  3. Step 3: Cross multiply
    89,420.11x = 123,399.72 × 49,133.81
  4. Step 4: Simplify right side
    89,420.11x = 6,063,098,705.03
  5. Step 5: Solve for x
    x = 6,063,098,705.03/89,420.11
  6. Step 6: Final answer
    x = 67,804.65

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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.