Home / 81,294.60-121,942.08-43,872.26

Finding the Fourth Proportional to 81,294.60, 121,942.08 and 43,872.26

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Solution

The fourth proportional to 81,294.60, 121,942.08 and 43,872.26 is: 65,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,294.60 : 121,942.08 = 43,872.26 : x
  2. Step 2: Convert to fraction form
    81,294.60/121,942.08 = 43,872.26/x
  3. Step 3: Cross multiply
    81,294.60x = 121,942.08 × 43,872.26
  4. Step 4: Simplify right side
    81,294.60x = 5,349,874,638.70
  5. Step 5: Solve for x
    x = 5,349,874,638.70/81,294.60
  6. Step 6: Final answer
    x = 65,808.49

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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.