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Finding the Fourth Proportional to 71,281.02, 106,708.50 and 43,115.84

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Solution

The fourth proportional to 71,281.02, 106,708.50 and 43,115.84 is: 64,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,281.02 : 106,708.50 = 43,115.84 : x
  2. Step 2: Convert to fraction form
    71,281.02/106,708.50 = 43,115.84/x
  3. Step 3: Cross multiply
    71,281.02x = 106,708.50 × 43,115.84
  4. Step 4: Simplify right side
    71,281.02x = 4,600,826,612.64
  5. Step 5: Solve for x
    x = 4,600,826,612.64/71,281.02
  6. Step 6: Final answer
    x = 64,544.90

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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.