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Finding the Fourth Proportional to 51,806.68, 71,493.12 and 29,145.68

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Solution

The fourth proportional to 51,806.68, 71,493.12 and 29,145.68 is: 40,220.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,806.68 : 71,493.12 = 29,145.68 : x
  2. Step 2: Convert to fraction form
    51,806.68/71,493.12 = 29,145.68/x
  3. Step 3: Cross multiply
    51,806.68x = 71,493.12 × 29,145.68
  4. Step 4: Simplify right side
    51,806.68x = 2,083,715,597.72
  5. Step 5: Solve for x
    x = 2,083,715,597.72/51,806.68
  6. Step 6: Final answer
    x = 40,220.98

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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.