Home / 91,240.90-125,905.58-57,247.62

Finding the Fourth Proportional to 91,240.90, 125,905.58 and 57,247.62

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Solution

The fourth proportional to 91,240.90, 125,905.58 and 57,247.62 is: 78,997.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,240.90 : 125,905.58 = 57,247.62 : x
  2. Step 2: Convert to fraction form
    91,240.90/125,905.58 = 57,247.62/x
  3. Step 3: Cross multiply
    91,240.90x = 125,905.58 × 57,247.62
  4. Step 4: Simplify right side
    91,240.90x = 7,207,794,799.72
  5. Step 5: Solve for x
    x = 7,207,794,799.72/91,240.90
  6. Step 6: Final answer
    x = 78,997.41

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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.