Home / 77,042.70-115,561.62-45,667.76

Finding the Fourth Proportional to 77,042.70, 115,561.62 and 45,667.76

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Solution

The fourth proportional to 77,042.70, 115,561.62 and 45,667.76 is: 68,500.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,042.70 : 115,561.62 = 45,667.76 : x
  2. Step 2: Convert to fraction form
    77,042.70/115,561.62 = 45,667.76/x
  3. Step 3: Cross multiply
    77,042.70x = 115,561.62 × 45,667.76
  4. Step 4: Simplify right side
    77,042.70x = 5,277,439,749.56
  5. Step 5: Solve for x
    x = 5,277,439,749.56/77,042.70
  6. Step 6: Final answer
    x = 68,500.19

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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.