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Finding the Fourth Proportional to 93,012.45, 128,358.08 and 50,571.88

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Solution

The fourth proportional to 93,012.45, 128,358.08 and 50,571.88 is: 69,789.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,012.45 : 128,358.08 = 50,571.88 : x
  2. Step 2: Convert to fraction form
    93,012.45/128,358.08 = 50,571.88/x
  3. Step 3: Cross multiply
    93,012.45x = 128,358.08 × 50,571.88
  4. Step 4: Simplify right side
    93,012.45x = 6,491,309,418.79
  5. Step 5: Solve for x
    x = 6,491,309,418.79/93,012.45
  6. Step 6: Final answer
    x = 69,789.68

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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.