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Finding the Fourth Proportional to 71,199.43, 98,255.72 and 38,934.19

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Solution

The fourth proportional to 71,199.43, 98,255.72 and 38,934.19 is: 53,729.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,199.43 : 98,255.72 = 38,934.19 : x
  2. Step 2: Convert to fraction form
    71,199.43/98,255.72 = 38,934.19/x
  3. Step 3: Cross multiply
    71,199.43x = 98,255.72 × 38,934.19
  4. Step 4: Simplify right side
    71,199.43x = 3,825,506,676.40
  5. Step 5: Solve for x
    x = 3,825,506,676.40/71,199.43
  6. Step 6: Final answer
    x = 53,729.46

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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.