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Finding the Fourth Proportional to 34,711.80, 52,029.30 and 19,140.60

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Solution

The fourth proportional to 34,711.80, 52,029.30 and 19,140.60 is: 28,689.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,711.80 : 52,029.30 = 19,140.60 : x
  2. Step 2: Convert to fraction form
    34,711.80/52,029.30 = 19,140.60/x
  3. Step 3: Cross multiply
    34,711.80x = 52,029.30 × 19,140.60
  4. Step 4: Simplify right side
    34,711.80x = 995,872,019.58
  5. Step 5: Solve for x
    x = 995,872,019.58/34,711.80
  6. Step 6: Final answer
    x = 28,689.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.