Home / 71,015.78-98,007.72-39,191.60

Finding the Fourth Proportional to 71,015.78, 98,007.72 and 39,191.60

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Solution

The fourth proportional to 71,015.78, 98,007.72 and 39,191.60 is: 54,087.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,015.78 : 98,007.72 = 39,191.60 : x
  2. Step 2: Convert to fraction form
    71,015.78/98,007.72 = 39,191.60/x
  3. Step 3: Cross multiply
    71,015.78x = 98,007.72 × 39,191.60
  4. Step 4: Simplify right side
    71,015.78x = 3,841,079,359.15
  5. Step 5: Solve for x
    x = 3,841,079,359.15/71,015.78
  6. Step 6: Final answer
    x = 54,087.69

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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.