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Finding the Fourth Proportional to 70,268.72, 105,232.44 and 38,630.48

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Solution

The fourth proportional to 70,268.72, 105,232.44 and 38,630.48 is: 57,851.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,268.72 : 105,232.44 = 38,630.48 : x
  2. Step 2: Convert to fraction form
    70,268.72/105,232.44 = 38,630.48/x
  3. Step 3: Cross multiply
    70,268.72x = 105,232.44 × 38,630.48
  4. Step 4: Simplify right side
    70,268.72x = 4,065,179,668.77
  5. Step 5: Solve for x
    x = 4,065,179,668.77/70,268.72
  6. Step 6: Final answer
    x = 57,851.91

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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.