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Finding the Fourth Proportional to 72,452.40, 108,808.20 and 70,119.60

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Solution

The fourth proportional to 72,452.40, 108,808.20 and 70,119.60 is: 105,304.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,452.40 : 108,808.20 = 70,119.60 : x
  2. Step 2: Convert to fraction form
    72,452.40/108,808.20 = 70,119.60/x
  3. Step 3: Cross multiply
    72,452.40x = 108,808.20 × 70,119.60
  4. Step 4: Simplify right side
    72,452.40x = 7,629,587,460.72
  5. Step 5: Solve for x
    x = 7,629,587,460.72/72,452.40
  6. Step 6: Final answer
    x = 105,304.83

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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.