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Finding the Fourth Proportional to 50,376.68, 69,520.40 and 28,866

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Solution

The fourth proportional to 50,376.68, 69,520.40 and 28,866 is: 39,835.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,376.68 : 69,520.40 = 28,866 : x
  2. Step 2: Convert to fraction form
    50,376.68/69,520.40 = 28,866/x
  3. Step 3: Cross multiply
    50,376.68x = 69,520.40 × 28,866
  4. Step 4: Simplify right side
    50,376.68x = 2,006,775,830.32
  5. Step 5: Solve for x
    x = 2,006,775,830.32/50,376.68
  6. Step 6: Final answer
    x = 39,835.41

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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.