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Finding the Fourth Proportional to 70,144.40, 96,698.58 and 43,268.78

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Solution

The fourth proportional to 70,144.40, 96,698.58 and 43,268.78 is: 59,648.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,144.40 : 96,698.58 = 43,268.78 : x
  2. Step 2: Convert to fraction form
    70,144.40/96,698.58 = 43,268.78/x
  3. Step 3: Cross multiply
    70,144.40x = 96,698.58 × 43,268.78
  4. Step 4: Simplify right side
    70,144.40x = 4,184,029,584.33
  5. Step 5: Solve for x
    x = 4,184,029,584.33/70,144.40
  6. Step 6: Final answer
    x = 59,648.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.