Home / 81,208.84-121,817.82-30,607.24

Finding the Fourth Proportional to 81,208.84, 121,817.82 and 30,607.24

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Solution

The fourth proportional to 81,208.84, 121,817.82 and 30,607.24 is: 45,912.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,208.84 : 121,817.82 = 30,607.24 : x
  2. Step 2: Convert to fraction form
    81,208.84/121,817.82 = 30,607.24/x
  3. Step 3: Cross multiply
    81,208.84x = 121,817.82 × 30,607.24
  4. Step 4: Simplify right side
    81,208.84x = 3,728,507,253.02
  5. Step 5: Solve for x
    x = 3,728,507,253.02/81,208.84
  6. Step 6: Final answer
    x = 45,912.58

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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.