Home / 57,420-79,238.16-31,926.42

Finding the Fourth Proportional to 57,420, 79,238.16 and 31,926.42

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Solution

The fourth proportional to 57,420, 79,238.16 and 31,926.42 is: 44,057.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,420 : 79,238.16 = 31,926.42 : x
  2. Step 2: Convert to fraction form
    57,420/79,238.16 = 31,926.42/x
  3. Step 3: Cross multiply
    57,420x = 79,238.16 × 31,926.42
  4. Step 4: Simplify right side
    57,420x = 2,529,790,776.19
  5. Step 5: Solve for x
    x = 2,529,790,776.19/57,420
  6. Step 6: Final answer
    x = 44,057.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.