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Finding the Fourth Proportional to 93,450.94, 128,917.39 and 61,171.32

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Solution

The fourth proportional to 93,450.94, 128,917.39 and 61,171.32 is: 84,387.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,450.94 : 128,917.39 = 61,171.32 : x
  2. Step 2: Convert to fraction form
    93,450.94/128,917.39 = 61,171.32/x
  3. Step 3: Cross multiply
    93,450.94x = 128,917.39 × 61,171.32
  4. Step 4: Simplify right side
    93,450.94x = 7,886,047,362.46
  5. Step 5: Solve for x
    x = 7,886,047,362.46/93,450.94
  6. Step 6: Final answer
    x = 84,387.03

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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.