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Finding the Fourth Proportional to 34,672.69, 47,874.95 and 28,738.63

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Solution

The fourth proportional to 34,672.69, 47,874.95 and 28,738.63 is: 39,681.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,672.69 : 47,874.95 = 28,738.63 : x
  2. Step 2: Convert to fraction form
    34,672.69/47,874.95 = 28,738.63/x
  3. Step 3: Cross multiply
    34,672.69x = 47,874.95 × 28,738.63
  4. Step 4: Simplify right side
    34,672.69x = 1,375,860,474.32
  5. Step 5: Solve for x
    x = 1,375,860,474.32/34,672.69
  6. Step 6: Final answer
    x = 39,681.39

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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.