Home / 71,180.81-98,220.99-39,345.38

Finding the Fourth Proportional to 71,180.81, 98,220.99 and 39,345.38

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Solution

The fourth proportional to 71,180.81, 98,220.99 and 39,345.38 is: 54,291.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,180.81 : 98,220.99 = 39,345.38 : x
  2. Step 2: Convert to fraction form
    71,180.81/98,220.99 = 39,345.38/x
  3. Step 3: Cross multiply
    71,180.81x = 98,220.99 × 39,345.38
  4. Step 4: Simplify right side
    71,180.81x = 3,864,542,568.62
  5. Step 5: Solve for x
    x = 3,864,542,568.62/71,180.81
  6. Step 6: Final answer
    x = 54,291.91

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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.