Home / 71,178.36-98,218.62-39,342.12

Finding the Fourth Proportional to 71,178.36, 98,218.62 and 39,342.12

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Solution

The fourth proportional to 71,178.36, 98,218.62 and 39,342.12 is: 54,287.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,178.36 : 98,218.62 = 39,342.12 : x
  2. Step 2: Convert to fraction form
    71,178.36/98,218.62 = 39,342.12/x
  3. Step 3: Cross multiply
    71,178.36x = 98,218.62 × 39,342.12
  4. Step 4: Simplify right side
    71,178.36x = 3,864,128,734.27
  5. Step 5: Solve for x
    x = 3,864,128,734.27/71,178.36
  6. Step 6: Final answer
    x = 54,287.97

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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.