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Finding the Fourth Proportional to 76,105.63, 105,046.88 and 44,280.68

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Solution

The fourth proportional to 76,105.63, 105,046.88 and 44,280.68 is: 61,119.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,105.63 : 105,046.88 = 44,280.68 : x
  2. Step 2: Convert to fraction form
    76,105.63/105,046.88 = 44,280.68/x
  3. Step 3: Cross multiply
    76,105.63x = 105,046.88 × 44,280.68
  4. Step 4: Simplify right side
    76,105.63x = 4,651,546,531.64
  5. Step 5: Solve for x
    x = 4,651,546,531.64/76,105.63
  6. Step 6: Final answer
    x = 61,119.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.