Home / 47,405.39-71,107.65-19,318.86

Finding the Fourth Proportional to 47,405.39, 71,107.65 and 19,318.86

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Solution

The fourth proportional to 47,405.39, 71,107.65 and 19,318.86 is: 28,978.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,405.39 : 71,107.65 = 19,318.86 : x
  2. Step 2: Convert to fraction form
    47,405.39/71,107.65 = 19,318.86/x
  3. Step 3: Cross multiply
    47,405.39x = 71,107.65 × 19,318.86
  4. Step 4: Simplify right side
    47,405.39x = 1,373,718,735.28
  5. Step 5: Solve for x
    x = 1,373,718,735.28/47,405.39
  6. Step 6: Final answer
    x = 28,978.12

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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.