Home / 91,128.48-136,699.26-27,940.40

Finding the Fourth Proportional to 91,128.48, 136,699.26 and 27,940.40

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Solution

The fourth proportional to 91,128.48, 136,699.26 and 27,940.40 is: 41,912.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,128.48 : 136,699.26 = 27,940.40 : x
  2. Step 2: Convert to fraction form
    91,128.48/136,699.26 = 27,940.40/x
  3. Step 3: Cross multiply
    91,128.48x = 136,699.26 × 27,940.40
  4. Step 4: Simplify right side
    91,128.48x = 3,819,432,004.10
  5. Step 5: Solve for x
    x = 3,819,432,004.10/91,128.48
  6. Step 6: Final answer
    x = 41,912.61

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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.