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Finding the Fourth Proportional to 128,879.08, 193,309.98 and 35,377

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Solution

The fourth proportional to 128,879.08, 193,309.98 and 35,377 is: 53,063.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,879.08 : 193,309.98 = 35,377 : x
  2. Step 2: Convert to fraction form
    128,879.08/193,309.98 = 35,377/x
  3. Step 3: Cross multiply
    128,879.08x = 193,309.98 × 35,377
  4. Step 4: Simplify right side
    128,879.08x = 6,838,727,162.46
  5. Step 5: Solve for x
    x = 6,838,727,162.46/128,879.08
  6. Step 6: Final answer
    x = 53,063.13

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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.