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Finding the Fourth Proportional to 71,383.80, 98,514.98 and 39,555.64

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Solution

The fourth proportional to 71,383.80, 98,514.98 and 39,555.64 is: 54,589.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,383.80 : 98,514.98 = 39,555.64 : x
  2. Step 2: Convert to fraction form
    71,383.80/98,514.98 = 39,555.64/x
  3. Step 3: Cross multiply
    71,383.80x = 98,514.98 × 39,555.64
  4. Step 4: Simplify right side
    71,383.80x = 3,896,823,083.49
  5. Step 5: Solve for x
    x = 3,896,823,083.49/71,383.80
  6. Step 6: Final answer
    x = 54,589.74

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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.