Home / 47,890.23-71,818.07-20,190.39

Finding the Fourth Proportional to 47,890.23, 71,818.07 and 20,190.39

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Solution

The fourth proportional to 47,890.23, 71,818.07 and 20,190.39 is: 30,278.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,890.23 : 71,818.07 = 20,190.39 : x
  2. Step 2: Convert to fraction form
    47,890.23/71,818.07 = 20,190.39/x
  3. Step 3: Cross multiply
    47,890.23x = 71,818.07 × 20,190.39
  4. Step 4: Simplify right side
    47,890.23x = 1,450,034,741.40
  5. Step 5: Solve for x
    x = 1,450,034,741.40/47,890.23
  6. Step 6: Final answer
    x = 30,278.30

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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.