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Finding the Fourth Proportional to 117,979.68, 176,909.34 and 39,065.43

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Solution

The fourth proportional to 117,979.68, 176,909.34 and 39,065.43 is: 58,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,979.68 : 176,909.34 = 39,065.43 : x
  2. Step 2: Convert to fraction form
    117,979.68/176,909.34 = 39,065.43/x
  3. Step 3: Cross multiply
    117,979.68x = 176,909.34 × 39,065.43
  4. Step 4: Simplify right side
    117,979.68x = 6,911,039,438.12
  5. Step 5: Solve for x
    x = 6,911,039,438.12/117,979.68
  6. Step 6: Final answer
    x = 58,578.22

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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.