Home / 74,490.10-111,965.55-73,107.70

Finding the Fourth Proportional to 74,490.10, 111,965.55 and 73,107.70

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Solution

The fourth proportional to 74,490.10, 111,965.55 and 73,107.70 is: 109,887.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,490.10 : 111,965.55 = 73,107.70 : x
  2. Step 2: Convert to fraction form
    74,490.10/111,965.55 = 73,107.70/x
  3. Step 3: Cross multiply
    74,490.10x = 111,965.55 × 73,107.70
  4. Step 4: Simplify right side
    74,490.10x = 8,185,543,839.74
  5. Step 5: Solve for x
    x = 8,185,543,839.74/74,490.10
  6. Step 6: Final answer
    x = 109,887.67

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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.