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Finding the Fourth Proportional to 76,469.91, 105,524.91 and 42,480.60

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Solution

The fourth proportional to 76,469.91, 105,524.91 and 42,480.60 is: 58,621.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,469.91 : 105,524.91 = 42,480.60 : x
  2. Step 2: Convert to fraction form
    76,469.91/105,524.91 = 42,480.60/x
  3. Step 3: Cross multiply
    76,469.91x = 105,524.91 × 42,480.60
  4. Step 4: Simplify right side
    76,469.91x = 4,482,761,491.75
  5. Step 5: Solve for x
    x = 4,482,761,491.75/76,469.91
  6. Step 6: Final answer
    x = 58,621.25

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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.