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Finding the Fourth Proportional to 93,168, 128,574.12 and 50,728.84

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Solution

The fourth proportional to 93,168, 128,574.12 and 50,728.84 is: 70,007.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,168 : 128,574.12 = 50,728.84 : x
  2. Step 2: Convert to fraction form
    93,168/128,574.12 = 50,728.84/x
  3. Step 3: Cross multiply
    93,168x = 128,574.12 × 50,728.84
  4. Step 4: Simplify right side
    93,168x = 6,522,415,961.62
  5. Step 5: Solve for x
    x = 6,522,415,961.62/93,168
  6. Step 6: Final answer
    x = 70,007.04

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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.