Home / 84,739.53-127,134.81-76,380.33

Finding the Fourth Proportional to 84,739.53, 127,134.81 and 76,380.33

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Solution

The fourth proportional to 84,739.53, 127,134.81 and 76,380.33 is: 114,593.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,739.53 : 127,134.81 = 76,380.33 : x
  2. Step 2: Convert to fraction form
    84,739.53/127,134.81 = 76,380.33/x
  3. Step 3: Cross multiply
    84,739.53x = 127,134.81 × 76,380.33
  4. Step 4: Simplify right side
    84,739.53x = 9,710,598,742.29
  5. Step 5: Solve for x
    x = 9,710,598,742.29/84,739.53
  6. Step 6: Final answer
    x = 114,593.49

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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.