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Finding the Fourth Proportional to 72,951.94, 100,673.58 and 39,417.94

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Solution

The fourth proportional to 72,951.94, 100,673.58 and 39,417.94 is: 54,396.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,951.94 : 100,673.58 = 39,417.94 : x
  2. Step 2: Convert to fraction form
    72,951.94/100,673.58 = 39,417.94/x
  3. Step 3: Cross multiply
    72,951.94x = 100,673.58 × 39,417.94
  4. Step 4: Simplify right side
    72,951.94x = 3,968,345,409.68
  5. Step 5: Solve for x
    x = 3,968,345,409.68/72,951.94
  6. Step 6: Final answer
    x = 54,396.71

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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.