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Finding the Fourth Proportional to 93,940.78, 129,639.95 and 50,921.68

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Solution

The fourth proportional to 93,940.78, 129,639.95 and 50,921.68 is: 70,272.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,940.78 : 129,639.95 = 50,921.68 : x
  2. Step 2: Convert to fraction form
    93,940.78/129,639.95 = 50,921.68/x
  3. Step 3: Cross multiply
    93,940.78x = 129,639.95 × 50,921.68
  4. Step 4: Simplify right side
    93,940.78x = 6,601,484,147.51
  5. Step 5: Solve for x
    x = 6,601,484,147.51/93,940.78
  6. Step 6: Final answer
    x = 70,272.83

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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.