Home / 67,128.35-100,687.21-39,030.46

Finding the Fourth Proportional to 67,128.35, 100,687.21 and 39,030.46

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Solution

The fourth proportional to 67,128.35, 100,687.21 and 39,030.46 is: 58,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,128.35 : 100,687.21 = 39,030.46 : x
  2. Step 2: Convert to fraction form
    67,128.35/100,687.21 = 39,030.46/x
  3. Step 3: Cross multiply
    67,128.35x = 100,687.21 × 39,030.46
  4. Step 4: Simplify right side
    67,128.35x = 3,929,867,773.12
  5. Step 5: Solve for x
    x = 3,929,867,773.12/67,128.35
  6. Step 6: Final answer
    x = 58,542.60

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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.