Home / 91,239.90-125,904.20-57,246.62

Finding the Fourth Proportional to 91,239.90, 125,904.20 and 57,246.62

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Solution

The fourth proportional to 91,239.90, 125,904.20 and 57,246.62 is: 78,996.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,239.90 : 125,904.20 = 57,246.62 : x
  2. Step 2: Convert to fraction form
    91,239.90/125,904.20 = 57,246.62/x
  3. Step 3: Cross multiply
    91,239.90x = 125,904.20 × 57,246.62
  4. Step 4: Simplify right side
    91,239.90x = 7,207,589,893.80
  5. Step 5: Solve for x
    x = 7,207,589,893.80/91,239.90
  6. Step 6: Final answer
    x = 78,996.03

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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.