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Finding the Fourth Proportional to 51,885.21, 71,609.21 and 31,738.84

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Solution

The fourth proportional to 51,885.21, 71,609.21 and 31,738.84 is: 43,804.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,885.21 : 71,609.21 = 31,738.84 : x
  2. Step 2: Convert to fraction form
    51,885.21/71,609.21 = 31,738.84/x
  3. Step 3: Cross multiply
    51,885.21x = 71,609.21 × 31,738.84
  4. Step 4: Simplify right side
    51,885.21x = 2,272,793,218.55
  5. Step 5: Solve for x
    x = 2,272,793,218.55/51,885.21
  6. Step 6: Final answer
    x = 43,804.26

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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.