Home / 74,102.64-111,120.34-31,962.79

Finding the Fourth Proportional to 74,102.64, 111,120.34 and 31,962.79

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Solution

The fourth proportional to 74,102.64, 111,120.34 and 31,962.79 is: 47,929.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,102.64 : 111,120.34 = 31,962.79 : x
  2. Step 2: Convert to fraction form
    74,102.64/111,120.34 = 31,962.79/x
  3. Step 3: Cross multiply
    74,102.64x = 111,120.34 × 31,962.79
  4. Step 4: Simplify right side
    74,102.64x = 3,551,716,092.15
  5. Step 5: Solve for x
    x = 3,551,716,092.15/74,102.64
  6. Step 6: Final answer
    x = 47,929.68

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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.