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Finding the Fourth Proportional to 71,406.72, 98,542.08 and 39,576.60

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Solution

The fourth proportional to 71,406.72, 98,542.08 and 39,576.60 is: 54,616.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,406.72 : 98,542.08 = 39,576.60 : x
  2. Step 2: Convert to fraction form
    71,406.72/98,542.08 = 39,576.60/x
  3. Step 3: Cross multiply
    71,406.72x = 98,542.08 × 39,576.60
  4. Step 4: Simplify right side
    71,406.72x = 3,899,960,483.33
  5. Step 5: Solve for x
    x = 3,899,960,483.33/71,406.72
  6. Step 6: Final answer
    x = 54,616.15

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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.