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Finding the Fourth Proportional to 71,059.38, 106,549.83 and 28,928.64

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Solution

The fourth proportional to 71,059.38, 106,549.83 and 28,928.64 is: 43,376.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,059.38 : 106,549.83 = 28,928.64 : x
  2. Step 2: Convert to fraction form
    71,059.38/106,549.83 = 28,928.64/x
  3. Step 3: Cross multiply
    71,059.38x = 106,549.83 × 28,928.64
  4. Step 4: Simplify right side
    71,059.38x = 3,082,341,674.13
  5. Step 5: Solve for x
    x = 3,082,341,674.13/71,059.38
  6. Step 6: Final answer
    x = 43,376.99

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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.