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Finding the Fourth Proportional to 38,197.78, 52,714.90 and 28,749.94

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Solution

The fourth proportional to 38,197.78, 52,714.90 and 28,749.94 is: 39,676.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,197.78 : 52,714.90 = 28,749.94 : x
  2. Step 2: Convert to fraction form
    38,197.78/52,714.90 = 28,749.94/x
  3. Step 3: Cross multiply
    38,197.78x = 52,714.90 × 28,749.94
  4. Step 4: Simplify right side
    38,197.78x = 1,515,550,116.26
  5. Step 5: Solve for x
    x = 1,515,550,116.26/38,197.78
  6. Step 6: Final answer
    x = 39,676.40

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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.