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Finding the Fourth Proportional to 93,109.91, 128,487.87 and 50,668.47

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Solution

The fourth proportional to 93,109.91, 128,487.87 and 50,668.47 is: 69,920.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,109.91 : 128,487.87 = 50,668.47 : x
  2. Step 2: Convert to fraction form
    93,109.91/128,487.87 = 50,668.47/x
  3. Step 3: Cross multiply
    93,109.91x = 128,487.87 × 50,668.47
  4. Step 4: Simplify right side
    93,109.91x = 6,510,283,786.46
  5. Step 5: Solve for x
    x = 6,510,283,786.46/93,109.91
  6. Step 6: Final answer
    x = 69,920.42

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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.