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Finding the Fourth Proportional to 49,881.86, 68,834.21 and 28,368.71

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Solution

The fourth proportional to 49,881.86, 68,834.21 and 28,368.71 is: 39,147.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,881.86 : 68,834.21 = 28,368.71 : x
  2. Step 2: Convert to fraction form
    49,881.86/68,834.21 = 28,368.71/x
  3. Step 3: Cross multiply
    49,881.86x = 68,834.21 × 28,368.71
  4. Step 4: Simplify right side
    49,881.86x = 1,952,737,468.32
  5. Step 5: Solve for x
    x = 1,952,737,468.32/49,881.86
  6. Step 6: Final answer
    x = 39,147.24

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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.