Home / 66,020.85-99,043.80-21,650.26

Finding the Fourth Proportional to 66,020.85, 99,043.80 and 21,650.26

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Solution

The fourth proportional to 66,020.85, 99,043.80 and 21,650.26 is: 32,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,020.85 : 99,043.80 = 21,650.26 : x
  2. Step 2: Convert to fraction form
    66,020.85/99,043.80 = 21,650.26/x
  3. Step 3: Cross multiply
    66,020.85x = 99,043.80 × 21,650.26
  4. Step 4: Simplify right side
    66,020.85x = 2,144,324,021.39
  5. Step 5: Solve for x
    x = 2,144,324,021.39/66,020.85
  6. Step 6: Final answer
    x = 32,479.50

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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.