Home / 78,936.08-108,933.93-43,128.02

Finding the Fourth Proportional to 78,936.08, 108,933.93 and 43,128.02

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Solution

The fourth proportional to 78,936.08, 108,933.93 and 43,128.02 is: 59,517.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,936.08 : 108,933.93 = 43,128.02 : x
  2. Step 2: Convert to fraction form
    78,936.08/108,933.93 = 43,128.02/x
  3. Step 3: Cross multiply
    78,936.08x = 108,933.93 × 43,128.02
  4. Step 4: Simplify right side
    78,936.08x = 4,698,104,711.72
  5. Step 5: Solve for x
    x = 4,698,104,711.72/78,936.08
  6. Step 6: Final answer
    x = 59,517.84

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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.