Home / 81,914.28-122,767.60-39,804

Finding the Fourth Proportional to 81,914.28, 122,767.60 and 39,804

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Solution

The fourth proportional to 81,914.28, 122,767.60 and 39,804 is: 59,655.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,914.28 : 122,767.60 = 39,804 : x
  2. Step 2: Convert to fraction form
    81,914.28/122,767.60 = 39,804/x
  3. Step 3: Cross multiply
    81,914.28x = 122,767.60 × 39,804
  4. Step 4: Simplify right side
    81,914.28x = 4,886,641,550.40
  5. Step 5: Solve for x
    x = 4,886,641,550.40/81,914.28
  6. Step 6: Final answer
    x = 59,655.55

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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.