Home / 81,910.70-113,009.48-66,777.26

Finding the Fourth Proportional to 81,910.70, 113,009.48 and 66,777.26

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Solution

The fourth proportional to 81,910.70, 113,009.48 and 66,777.26 is: 92,130.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,910.70 : 113,009.48 = 66,777.26 : x
  2. Step 2: Convert to fraction form
    81,910.70/113,009.48 = 66,777.26/x
  3. Step 3: Cross multiply
    81,910.70x = 113,009.48 × 66,777.26
  4. Step 4: Simplify right side
    81,910.70x = 7,546,463,428.42
  5. Step 5: Solve for x
    x = 7,546,463,428.42/81,910.70
  6. Step 6: Final answer
    x = 92,130.37

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1.5x scale

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.