Home / 43,170.91-64,739.34-20,977.72

Finding the Fourth Proportional to 43,170.91, 64,739.34 and 20,977.72

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Solution

The fourth proportional to 43,170.91, 64,739.34 and 20,977.72 is: 31,458.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,170.91 : 64,739.34 = 20,977.72 : x
  2. Step 2: Convert to fraction form
    43,170.91/64,739.34 = 20,977.72/x
  3. Step 3: Cross multiply
    43,170.91x = 64,739.34 × 20,977.72
  4. Step 4: Simplify right side
    43,170.91x = 1,358,083,747.50
  5. Step 5: Solve for x
    x = 1,358,083,747.50/43,170.91
  6. Step 6: Final answer
    x = 31,458.31

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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.