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Finding the Fourth Proportional to 50,872.36, 70,200.96 and 28,210

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Solution

The fourth proportional to 50,872.36, 70,200.96 and 28,210 is: 38,928.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,872.36 : 70,200.96 = 28,210 : x
  2. Step 2: Convert to fraction form
    50,872.36/70,200.96 = 28,210/x
  3. Step 3: Cross multiply
    50,872.36x = 70,200.96 × 28,210
  4. Step 4: Simplify right side
    50,872.36x = 1,980,369,081.60
  5. Step 5: Solve for x
    x = 1,980,369,081.60/50,872.36
  6. Step 6: Final answer
    x = 38,928.19

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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.