Home / 71,171.36-98,212.88-39,339.36

Finding the Fourth Proportional to 71,171.36, 98,212.88 and 39,339.36

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Solution

The fourth proportional to 71,171.36, 98,212.88 and 39,339.36 is: 54,286.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,171.36 : 98,212.88 = 39,339.36 : x
  2. Step 2: Convert to fraction form
    71,171.36/98,212.88 = 39,339.36/x
  3. Step 3: Cross multiply
    71,171.36x = 98,212.88 × 39,339.36
  4. Step 4: Simplify right side
    71,171.36x = 3,863,631,842.96
  5. Step 5: Solve for x
    x = 3,863,631,842.96/71,171.36
  6. Step 6: Final answer
    x = 54,286.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.