Home / 47,405.25-71,107.88-19,319.11

Finding the Fourth Proportional to 47,405.25, 71,107.88 and 19,319.11

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Solution

The fourth proportional to 47,405.25, 71,107.88 and 19,319.11 is: 28,978.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,405.25 : 71,107.88 = 19,319.11 : x
  2. Step 2: Convert to fraction form
    47,405.25/71,107.88 = 19,319.11/x
  3. Step 3: Cross multiply
    47,405.25x = 71,107.88 × 19,319.11
  4. Step 4: Simplify right side
    47,405.25x = 1,373,740,681.22
  5. Step 5: Solve for x
    x = 1,373,740,681.22/47,405.25
  6. Step 6: Final answer
    x = 28,978.66

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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.