Home / 74,270.30-111,403.60-21,680.24

Finding the Fourth Proportional to 74,270.30, 111,403.60 and 21,680.24

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Solution

The fourth proportional to 74,270.30, 111,403.60 and 21,680.24 is: 32,519.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,270.30 : 111,403.60 = 21,680.24 : x
  2. Step 2: Convert to fraction form
    74,270.30/111,403.60 = 21,680.24/x
  3. Step 3: Cross multiply
    74,270.30x = 111,403.60 × 21,680.24
  4. Step 4: Simplify right side
    74,270.30x = 2,415,256,784.86
  5. Step 5: Solve for x
    x = 2,415,256,784.86/74,270.30
  6. Step 6: Final answer
    x = 32,519.82

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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.