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Finding the Fourth Proportional to 57,576.68, 86,212.74 and 45,122.12

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Solution

The fourth proportional to 57,576.68, 86,212.74 and 45,122.12 is: 67,563.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,576.68 : 86,212.74 = 45,122.12 : x
  2. Step 2: Convert to fraction form
    57,576.68/86,212.74 = 45,122.12/x
  3. Step 3: Cross multiply
    57,576.68x = 86,212.74 × 45,122.12
  4. Step 4: Simplify right side
    57,576.68x = 3,890,101,599.81
  5. Step 5: Solve for x
    x = 3,890,101,599.81/57,576.68
  6. Step 6: Final answer
    x = 67,563.84

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1.5x scale

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.