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Finding the Fourth Proportional to 70,179.60, 105,269.40 and 40,582.20

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Solution

The fourth proportional to 70,179.60, 105,269.40 and 40,582.20 is: 60,873.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,179.60 : 105,269.40 = 40,582.20 : x
  2. Step 2: Convert to fraction form
    70,179.60/105,269.40 = 40,582.20/x
  3. Step 3: Cross multiply
    70,179.60x = 105,269.40 × 40,582.20
  4. Step 4: Simplify right side
    70,179.60x = 4,272,063,844.68
  5. Step 5: Solve for x
    x = 4,272,063,844.68/70,179.60
  6. Step 6: Final answer
    x = 60,873.30

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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.