Home / 57,581.12-86,369.64-40,644.68

Finding the Fourth Proportional to 57,581.12, 86,369.64 and 40,644.68

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Solution

The fourth proportional to 57,581.12, 86,369.64 and 40,644.68 is: 60,965.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,581.12 : 86,369.64 = 40,644.68 : x
  2. Step 2: Convert to fraction form
    57,581.12/86,369.64 = 40,644.68/x
  3. Step 3: Cross multiply
    57,581.12x = 86,369.64 × 40,644.68
  4. Step 4: Simplify right side
    57,581.12x = 3,510,466,379.52
  5. Step 5: Solve for x
    x = 3,510,466,379.52/57,581.12
  6. Step 6: Final answer
    x = 60,965.58

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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.