Home / 81,099.12-121,674.76-38,982.26

Finding the Fourth Proportional to 81,099.12, 121,674.76 and 38,982.26

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Solution

The fourth proportional to 81,099.12, 121,674.76 and 38,982.26 is: 58,485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,099.12 : 121,674.76 = 38,982.26 : x
  2. Step 2: Convert to fraction form
    81,099.12/121,674.76 = 38,982.26/x
  3. Step 3: Cross multiply
    81,099.12x = 121,674.76 × 38,982.26
  4. Step 4: Simplify right side
    81,099.12x = 4,743,157,336.49
  5. Step 5: Solve for x
    x = 4,743,157,336.49/81,099.12
  6. Step 6: Final answer
    x = 58,485.93

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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.