Home / 80,938.32-121,365.36-31,003.44

Finding the Fourth Proportional to 80,938.32, 121,365.36 and 31,003.44

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Solution

The fourth proportional to 80,938.32, 121,365.36 and 31,003.44 is: 46,489.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,938.32 : 121,365.36 = 31,003.44 : x
  2. Step 2: Convert to fraction form
    80,938.32/121,365.36 = 31,003.44/x
  3. Step 3: Cross multiply
    80,938.32x = 121,365.36 × 31,003.44
  4. Step 4: Simplify right side
    80,938.32x = 3,762,743,656.84
  5. Step 5: Solve for x
    x = 3,762,743,656.84/80,938.32
  6. Step 6: Final answer
    x = 46,489.03

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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.