Home / 74,742.40-111,940.80-51,241.60

Finding the Fourth Proportional to 74,742.40, 111,940.80 and 51,241.60

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Solution

The fourth proportional to 74,742.40, 111,940.80 and 51,241.60 is: 76,743.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,742.40 : 111,940.80 = 51,241.60 : x
  2. Step 2: Convert to fraction form
    74,742.40/111,940.80 = 51,241.60/x
  3. Step 3: Cross multiply
    74,742.40x = 111,940.80 × 51,241.60
  4. Step 4: Simplify right side
    74,742.40x = 5,736,025,697.28
  5. Step 5: Solve for x
    x = 5,736,025,697.28/74,742.40
  6. Step 6: Final answer
    x = 76,743.93

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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.