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Finding the Fourth Proportional to 104,908.57, 157,330.05 and 45,684.61

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Solution

The fourth proportional to 104,908.57, 157,330.05 and 45,684.61 is: 68,512.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,908.57 : 157,330.05 = 45,684.61 : x
  2. Step 2: Convert to fraction form
    104,908.57/157,330.05 = 45,684.61/x
  3. Step 3: Cross multiply
    104,908.57x = 157,330.05 × 45,684.61
  4. Step 4: Simplify right side
    104,908.57x = 7,187,561,410.89
  5. Step 5: Solve for x
    x = 7,187,561,410.89/104,908.57
  6. Step 6: Final answer
    x = 68,512.63

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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.