Home / 105,909.54-158,864.32-31,029.70

Finding the Fourth Proportional to 105,909.54, 158,864.32 and 31,029.70

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Solution

The fourth proportional to 105,909.54, 158,864.32 and 31,029.70 is: 46,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,909.54 : 158,864.32 = 31,029.70 : x
  2. Step 2: Convert to fraction form
    105,909.54/158,864.32 = 31,029.70/x
  3. Step 3: Cross multiply
    105,909.54x = 158,864.32 × 31,029.70
  4. Step 4: Simplify right side
    105,909.54x = 4,929,512,129.80
  5. Step 5: Solve for x
    x = 4,929,512,129.80/105,909.54
  6. Step 6: Final answer
    x = 46,544.55

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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.