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Finding the Fourth Proportional to 57,195.42, 85,791.91 and 15,642.42

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Solution

The fourth proportional to 57,195.42, 85,791.91 and 15,642.42 is: 23,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,195.42 : 85,791.91 = 15,642.42 : x
  2. Step 2: Convert to fraction form
    57,195.42/85,791.91 = 15,642.42/x
  3. Step 3: Cross multiply
    57,195.42x = 85,791.91 × 15,642.42
  4. Step 4: Simplify right side
    57,195.42x = 1,341,993,088.82
  5. Step 5: Solve for x
    x = 1,341,993,088.82/57,195.42
  6. Step 6: Final answer
    x = 23,463.30

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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.