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Finding the Fourth Proportional to 50,644.80, 69,889.76 and 28,288.80

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Solution

The fourth proportional to 50,644.80, 69,889.76 and 28,288.80 is: 39,038.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,644.80 : 69,889.76 = 28,288.80 : x
  2. Step 2: Convert to fraction form
    50,644.80/69,889.76 = 28,288.80/x
  3. Step 3: Cross multiply
    50,644.80x = 69,889.76 × 28,288.80
  4. Step 4: Simplify right side
    50,644.80x = 1,977,097,442.69
  5. Step 5: Solve for x
    x = 1,977,097,442.69/50,644.80
  6. Step 6: Final answer
    x = 39,038.51

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1.5x scale

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.