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Finding the Fourth Proportional to 50,670, 69,928.92 and 28,318.32

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Solution

The fourth proportional to 50,670, 69,928.92 and 28,318.32 is: 39,081.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,670 : 69,928.92 = 28,318.32 : x
  2. Step 2: Convert to fraction form
    50,670/69,928.92 = 28,318.32/x
  3. Step 3: Cross multiply
    50,670x = 69,928.92 × 28,318.32
  4. Step 4: Simplify right side
    50,670x = 1,980,269,533.81
  5. Step 5: Solve for x
    x = 1,980,269,533.81/50,670
  6. Step 6: Final answer
    x = 39,081.70

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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.