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Finding the Fourth Proportional to 76,560.65, 105,653.60 and 42,568.07

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Solution

The fourth proportional to 76,560.65, 105,653.60 and 42,568.07 is: 58,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,560.65 : 105,653.60 = 42,568.07 : x
  2. Step 2: Convert to fraction form
    76,560.65/105,653.60 = 42,568.07/x
  3. Step 3: Cross multiply
    76,560.65x = 105,653.60 × 42,568.07
  4. Step 4: Simplify right side
    76,560.65x = 4,497,469,099.44
  5. Step 5: Solve for x
    x = 4,497,469,099.44/76,560.65
  6. Step 6: Final answer
    x = 58,743.88

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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.