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Finding the Fourth Proportional to 50,481, 69,664.05 and 28,125

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Solution

The fourth proportional to 50,481, 69,664.05 and 28,125 is: 38,812.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,481 : 69,664.05 = 28,125 : x
  2. Step 2: Convert to fraction form
    50,481/69,664.05 = 28,125/x
  3. Step 3: Cross multiply
    50,481x = 69,664.05 × 28,125
  4. Step 4: Simplify right side
    50,481x = 1,959,301,406.25
  5. Step 5: Solve for x
    x = 1,959,301,406.25/50,481
  6. Step 6: Final answer
    x = 38,812.65

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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.