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Finding the Fourth Proportional to 34,673.69, 47,876.33 and 28,739.63

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Solution

The fourth proportional to 34,673.69, 47,876.33 and 28,739.63 is: 39,682.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,673.69 : 47,876.33 = 28,739.63 : x
  2. Step 2: Convert to fraction form
    34,673.69/47,876.33 = 28,739.63/x
  3. Step 3: Cross multiply
    34,673.69x = 47,876.33 × 28,739.63
  4. Step 4: Simplify right side
    34,673.69x = 1,375,948,009.96
  5. Step 5: Solve for x
    x = 1,375,948,009.96/34,673.69
  6. Step 6: Final answer
    x = 39,682.77

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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.