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Finding the Fourth Proportional to 115,694.72, 173,480.64 and 53,312

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Solution

The fourth proportional to 115,694.72, 173,480.64 and 53,312 is: 79,939.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,694.72 : 173,480.64 = 53,312 : x
  2. Step 2: Convert to fraction form
    115,694.72/173,480.64 = 53,312/x
  3. Step 3: Cross multiply
    115,694.72x = 173,480.64 × 53,312
  4. Step 4: Simplify right side
    115,694.72x = 9,248,599,879.68
  5. Step 5: Solve for x
    x = 9,248,599,879.68/115,694.72
  6. Step 6: Final answer
    x = 79,939.69

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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.