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Finding the Fourth Proportional to 71,683.26, 98,923.62 and 39,419.58

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Solution

The fourth proportional to 71,683.26, 98,923.62 and 39,419.58 is: 54,399.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,683.26 : 98,923.62 = 39,419.58 : x
  2. Step 2: Convert to fraction form
    71,683.26/98,923.62 = 39,419.58/x
  3. Step 3: Cross multiply
    71,683.26x = 98,923.62 × 39,419.58
  4. Step 4: Simplify right side
    71,683.26x = 3,899,527,552.48
  5. Step 5: Solve for x
    x = 3,899,527,552.48/71,683.26
  6. Step 6: Final answer
    x = 54,399.42

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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.