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Finding the Fourth Proportional to 66,714.72, 92,051.23 and 39,851.97

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Solution

The fourth proportional to 66,714.72, 92,051.23 and 39,851.97 is: 54,986.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,714.72 : 92,051.23 = 39,851.97 : x
  2. Step 2: Convert to fraction form
    66,714.72/92,051.23 = 39,851.97/x
  3. Step 3: Cross multiply
    66,714.72x = 92,051.23 × 39,851.97
  4. Step 4: Simplify right side
    66,714.72x = 3,668,422,856.42
  5. Step 5: Solve for x
    x = 3,668,422,856.42/66,714.72
  6. Step 6: Final answer
    x = 54,986.71

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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.