Home / 55,586.25-83,170.24-38,978.72

Finding the Fourth Proportional to 55,586.25, 83,170.24 and 38,978.72

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Solution

The fourth proportional to 55,586.25, 83,170.24 and 38,978.72 is: 58,321.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,586.25 : 83,170.24 = 38,978.72 : x
  2. Step 2: Convert to fraction form
    55,586.25/83,170.24 = 38,978.72/x
  3. Step 3: Cross multiply
    55,586.25x = 83,170.24 × 38,978.72
  4. Step 4: Simplify right side
    55,586.25x = 3,241,869,515.14
  5. Step 5: Solve for x
    x = 3,241,869,515.14/55,586.25
  6. Step 6: Final answer
    x = 58,321.43

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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.