Home / 105,505.38-145,591.97-57,749.67

Finding the Fourth Proportional to 105,505.38, 145,591.97 and 57,749.67

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Solution

The fourth proportional to 105,505.38, 145,591.97 and 57,749.67 is: 79,691.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,505.38 : 145,591.97 = 57,749.67 : x
  2. Step 2: Convert to fraction form
    105,505.38/145,591.97 = 57,749.67/x
  3. Step 3: Cross multiply
    105,505.38x = 145,591.97 × 57,749.67
  4. Step 4: Simplify right side
    105,505.38x = 8,407,887,933.40
  5. Step 5: Solve for x
    x = 8,407,887,933.40/105,505.38
  6. Step 6: Final answer
    x = 79,691.56

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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.