Home / 57,787.20-86,685.60-18,343.20

Finding the Fourth Proportional to 57,787.20, 86,685.60 and 18,343.20

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Solution

The fourth proportional to 57,787.20, 86,685.60 and 18,343.20 is: 27,516.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,787.20 : 86,685.60 = 18,343.20 : x
  2. Step 2: Convert to fraction form
    57,787.20/86,685.60 = 18,343.20/x
  3. Step 3: Cross multiply
    57,787.20x = 86,685.60 × 18,343.20
  4. Step 4: Simplify right side
    57,787.20x = 1,590,091,297.92
  5. Step 5: Solve for x
    x = 1,590,091,297.92/57,787.20
  6. Step 6: Final answer
    x = 27,516.32

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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.