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Finding the Fourth Proportional to 49,887.86, 68,842.49 and 28,374.71

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Solution

The fourth proportional to 49,887.86, 68,842.49 and 28,374.71 is: 39,155.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,887.86 : 68,842.49 = 28,374.71 : x
  2. Step 2: Convert to fraction form
    49,887.86/68,842.49 = 28,374.71/x
  3. Step 3: Cross multiply
    49,887.86x = 68,842.49 × 28,374.71
  4. Step 4: Simplify right side
    49,887.86x = 1,953,385,203.34
  5. Step 5: Solve for x
    x = 1,953,385,203.34/49,887.86
  6. Step 6: Final answer
    x = 39,155.53

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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.