Home / 67,399.20-93,029.40-39,114

Finding the Fourth Proportional to 67,399.20, 93,029.40 and 39,114

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Solution

The fourth proportional to 67,399.20, 93,029.40 and 39,114 is: 53,988.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,399.20 : 93,029.40 = 39,114 : x
  2. Step 2: Convert to fraction form
    67,399.20/93,029.40 = 39,114/x
  3. Step 3: Cross multiply
    67,399.20x = 93,029.40 × 39,114
  4. Step 4: Simplify right side
    67,399.20x = 3,638,751,951.60
  5. Step 5: Solve for x
    x = 3,638,751,951.60/67,399.20
  6. Step 6: Final answer
    x = 53,988.06

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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.