Home / 74,051.80-111,336.90-72,496.60

Finding the Fourth Proportional to 74,051.80, 111,336.90 and 72,496.60

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Solution

The fourth proportional to 74,051.80, 111,336.90 and 72,496.60 is: 108,998.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,051.80 : 111,336.90 = 72,496.60 : x
  2. Step 2: Convert to fraction form
    74,051.80/111,336.90 = 72,496.60/x
  3. Step 3: Cross multiply
    74,051.80x = 111,336.90 × 72,496.60
  4. Step 4: Simplify right side
    74,051.80x = 8,071,546,704.54
  5. Step 5: Solve for x
    x = 8,071,546,704.54/74,051.80
  6. Step 6: Final answer
    x = 108,998.66

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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.