Home / 47,379.40-71,067.18-21,077.32

Finding the Fourth Proportional to 47,379.40, 71,067.18 and 21,077.32

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Solution

The fourth proportional to 47,379.40, 71,067.18 and 21,077.32 is: 31,615.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,379.40 : 71,067.18 = 21,077.32 : x
  2. Step 2: Convert to fraction form
    47,379.40/71,067.18 = 21,077.32/x
  3. Step 3: Cross multiply
    47,379.40x = 71,067.18 × 21,077.32
  4. Step 4: Simplify right side
    47,379.40x = 1,497,905,694.36
  5. Step 5: Solve for x
    x = 1,497,905,694.36/47,379.40
  6. Step 6: Final answer
    x = 31,615.13

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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.