Home / 78,945.08-108,942.24-43,135.28

Finding the Fourth Proportional to 78,945.08, 108,942.24 and 43,135.28

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Solution

The fourth proportional to 78,945.08, 108,942.24 and 43,135.28 is: 59,525.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,945.08 : 108,942.24 = 43,135.28 : x
  2. Step 2: Convert to fraction form
    78,945.08/108,942.24 = 43,135.28/x
  3. Step 3: Cross multiply
    78,945.08x = 108,942.24 × 43,135.28
  4. Step 4: Simplify right side
    78,945.08x = 4,699,254,026.23
  5. Step 5: Solve for x
    x = 4,699,254,026.23/78,945.08
  6. Step 6: Final answer
    x = 59,525.61

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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.