Home / 57,115.04-85,651.28-19,664.64

Finding the Fourth Proportional to 57,115.04, 85,651.28 and 19,664.64

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Solution

The fourth proportional to 57,115.04, 85,651.28 and 19,664.64 is: 29,489.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,115.04 : 85,651.28 = 19,664.64 : x
  2. Step 2: Convert to fraction form
    57,115.04/85,651.28 = 19,664.64/x
  3. Step 3: Cross multiply
    57,115.04x = 85,651.28 × 19,664.64
  4. Step 4: Simplify right side
    57,115.04x = 1,684,301,586.74
  5. Step 5: Solve for x
    x = 1,684,301,586.74/57,115.04
  6. Step 6: Final answer
    x = 29,489.63

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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.