Home / 71,768.63-99,042.24-39,939.58

Finding the Fourth Proportional to 71,768.63, 99,042.24 and 39,939.58

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Solution

The fourth proportional to 71,768.63, 99,042.24 and 39,939.58 is: 55,117.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,768.63 : 99,042.24 = 39,939.58 : x
  2. Step 2: Convert to fraction form
    71,768.63/99,042.24 = 39,939.58/x
  3. Step 3: Cross multiply
    71,768.63x = 99,042.24 × 39,939.58
  4. Step 4: Simplify right side
    71,768.63x = 3,955,705,741.44
  5. Step 5: Solve for x
    x = 3,955,705,741.44/71,768.63
  6. Step 6: Final answer
    x = 55,117.47

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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.