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Finding the Fourth Proportional to 115,409.88, 173,135.88 and 40,507.56

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Solution

The fourth proportional to 115,409.88, 173,135.88 and 40,507.56 is: 60,768.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,409.88 : 173,135.88 = 40,507.56 : x
  2. Step 2: Convert to fraction form
    115,409.88/173,135.88 = 40,507.56/x
  3. Step 3: Cross multiply
    115,409.88x = 173,135.88 × 40,507.56
  4. Step 4: Simplify right side
    115,409.88x = 7,013,312,047.25
  5. Step 5: Solve for x
    x = 7,013,312,047.25/115,409.88
  6. Step 6: Final answer
    x = 60,768.73

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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.