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Finding the Fourth Proportional to 71,379.40, 107,069.10 and 29,826.40

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Solution

The fourth proportional to 71,379.40, 107,069.10 and 29,826.40 is: 44,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,379.40 : 107,069.10 = 29,826.40 : x
  2. Step 2: Convert to fraction form
    71,379.40/107,069.10 = 29,826.40/x
  3. Step 3: Cross multiply
    71,379.40x = 107,069.10 × 29,826.40
  4. Step 4: Simplify right side
    71,379.40x = 3,193,485,804.24
  5. Step 5: Solve for x
    x = 3,193,485,804.24/71,379.40
  6. Step 6: Final answer
    x = 44,739.60

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1.5x scale

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.