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Finding the Fourth Proportional to 70,390.60, 105,438.70 and 32,982.60

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Solution

The fourth proportional to 70,390.60, 105,438.70 and 32,982.60 is: 49,404.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,390.60 : 105,438.70 = 32,982.60 : x
  2. Step 2: Convert to fraction form
    70,390.60/105,438.70 = 32,982.60/x
  3. Step 3: Cross multiply
    70,390.60x = 105,438.70 × 32,982.60
  4. Step 4: Simplify right side
    70,390.60x = 3,477,642,466.62
  5. Step 5: Solve for x
    x = 3,477,642,466.62/70,390.60
  6. Step 6: Final answer
    x = 49,404.93

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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.