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Finding the Fourth Proportional to 57,522.71, 86,121.86 and 30,443.72

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Solution

The fourth proportional to 57,522.71, 86,121.86 and 30,443.72 is: 45,579.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,522.71 : 86,121.86 = 30,443.72 : x
  2. Step 2: Convert to fraction form
    57,522.71/86,121.86 = 30,443.72/x
  3. Step 3: Cross multiply
    57,522.71x = 86,121.86 × 30,443.72
  4. Step 4: Simplify right side
    57,522.71x = 2,621,869,208.89
  5. Step 5: Solve for x
    x = 2,621,869,208.89/57,522.71
  6. Step 6: Final answer
    x = 45,579.72

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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.