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Finding the Fourth Proportional to 50,678.64, 69,936.06 and 28,018.20

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Solution

The fourth proportional to 50,678.64, 69,936.06 and 28,018.20 is: 38,664.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,678.64 : 69,936.06 = 28,018.20 : x
  2. Step 2: Convert to fraction form
    50,678.64/69,936.06 = 28,018.20/x
  3. Step 3: Cross multiply
    50,678.64x = 69,936.06 × 28,018.20
  4. Step 4: Simplify right side
    50,678.64x = 1,959,482,516.29
  5. Step 5: Solve for x
    x = 1,959,482,516.29/50,678.64
  6. Step 6: Final answer
    x = 38,664.86

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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.