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Finding the Fourth Proportional to 70,836.42, 106,237.62 and 20,903.03

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Solution

The fourth proportional to 70,836.42, 106,237.62 and 20,903.03 is: 31,349.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,836.42 : 106,237.62 = 20,903.03 : x
  2. Step 2: Convert to fraction form
    70,836.42/106,237.62 = 20,903.03/x
  3. Step 3: Cross multiply
    70,836.42x = 106,237.62 × 20,903.03
  4. Step 4: Simplify right side
    70,836.42x = 2,220,687,626.80
  5. Step 5: Solve for x
    x = 2,220,687,626.80/70,836.42
  6. Step 6: Final answer
    x = 31,349.52

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.