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Finding the Fourth Proportional to 93,384, 128,869.92 and 50,942.70

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Solution

The fourth proportional to 93,384, 128,869.92 and 50,942.70 is: 70,300.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,384 : 128,869.92 = 50,942.70 : x
  2. Step 2: Convert to fraction form
    93,384/128,869.92 = 50,942.70/x
  3. Step 3: Cross multiply
    93,384x = 128,869.92 × 50,942.70
  4. Step 4: Simplify right side
    93,384x = 6,564,981,673.58
  5. Step 5: Solve for x
    x = 6,564,981,673.58/93,384
  6. Step 6: Final answer
    x = 70,300.93

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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.