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Finding the Fourth Proportional to 115,390.70, 173,163.45 and 40,510.70

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Solution

The fourth proportional to 115,390.70, 173,163.45 and 40,510.70 is: 60,793.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,390.70 : 173,163.45 = 40,510.70 : x
  2. Step 2: Convert to fraction form
    115,390.70/173,163.45 = 40,510.70/x
  3. Step 3: Cross multiply
    115,390.70x = 173,163.45 × 40,510.70
  4. Step 4: Simplify right side
    115,390.70x = 7,014,972,573.92
  5. Step 5: Solve for x
    x = 7,014,972,573.92/115,390.70
  6. Step 6: Final answer
    x = 60,793.22

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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.