Home / 78,945.84-108,942.30-43,135.56

Finding the Fourth Proportional to 78,945.84, 108,942.30 and 43,135.56

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Solution

The fourth proportional to 78,945.84, 108,942.30 and 43,135.56 is: 59,525.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,945.84 : 108,942.30 = 43,135.56 : x
  2. Step 2: Convert to fraction form
    78,945.84/108,942.30 = 43,135.56/x
  3. Step 3: Cross multiply
    78,945.84x = 108,942.30 × 43,135.56
  4. Step 4: Simplify right side
    78,945.84x = 4,699,287,118.19
  5. Step 5: Solve for x
    x = 4,699,287,118.19/78,945.84
  6. Step 6: Final answer
    x = 59,525.46

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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.