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Finding the Fourth Proportional to 56,012.88, 84,033.90 and 20,955.27

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Solution

The fourth proportional to 56,012.88, 84,033.90 and 20,955.27 is: 31,438.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,012.88 : 84,033.90 = 20,955.27 : x
  2. Step 2: Convert to fraction form
    56,012.88/84,033.90 = 20,955.27/x
  3. Step 3: Cross multiply
    56,012.88x = 84,033.90 × 20,955.27
  4. Step 4: Simplify right side
    56,012.88x = 1,760,953,063.65
  5. Step 5: Solve for x
    x = 1,760,953,063.65/56,012.88
  6. Step 6: Final answer
    x = 31,438.36

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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.