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Finding the Fourth Proportional to 117,750.45, 176,578.13 and 45,665.42

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Solution

The fourth proportional to 117,750.45, 176,578.13 and 45,665.42 is: 68,479.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,750.45 : 176,578.13 = 45,665.42 : x
  2. Step 2: Convert to fraction form
    117,750.45/176,578.13 = 45,665.42/x
  3. Step 3: Cross multiply
    117,750.45x = 176,578.13 × 45,665.42
  4. Step 4: Simplify right side
    117,750.45x = 8,063,513,700.54
  5. Step 5: Solve for x
    x = 8,063,513,700.54/117,750.45
  6. Step 6: Final answer
    x = 68,479.68

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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.