Home / 74,042.58-111,014.46-40,778.40

Finding the Fourth Proportional to 74,042.58, 111,014.46 and 40,778.40

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Solution

The fourth proportional to 74,042.58, 111,014.46 and 40,778.40 is: 61,140.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,042.58 : 111,014.46 = 40,778.40 : x
  2. Step 2: Convert to fraction form
    74,042.58/111,014.46 = 40,778.40/x
  3. Step 3: Cross multiply
    74,042.58x = 111,014.46 × 40,778.40
  4. Step 4: Simplify right side
    74,042.58x = 4,526,992,055.66
  5. Step 5: Solve for x
    x = 4,526,992,055.66/74,042.58
  6. Step 6: Final answer
    x = 61,140.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.