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Finding the Fourth Proportional to 93,081.84, 128,449.80 and 50,639.28

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Solution

The fourth proportional to 93,081.84, 128,449.80 and 50,639.28 is: 69,880.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,081.84 : 128,449.80 = 50,639.28 : x
  2. Step 2: Convert to fraction form
    93,081.84/128,449.80 = 50,639.28/x
  3. Step 3: Cross multiply
    93,081.84x = 128,449.80 × 50,639.28
  4. Step 4: Simplify right side
    93,081.84x = 6,504,605,388.14
  5. Step 5: Solve for x
    x = 6,504,605,388.14/93,081.84
  6. Step 6: Final answer
    x = 69,880.50

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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.