Home / 66,779.13-100,169.73-21,800.28

Finding the Fourth Proportional to 66,779.13, 100,169.73 and 21,800.28

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Solution

The fourth proportional to 66,779.13, 100,169.73 and 21,800.28 is: 32,700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,779.13 : 100,169.73 = 21,800.28 : x
  2. Step 2: Convert to fraction form
    66,779.13/100,169.73 = 21,800.28/x
  3. Step 3: Cross multiply
    66,779.13x = 100,169.73 × 21,800.28
  4. Step 4: Simplify right side
    66,779.13x = 2,183,728,161.52
  5. Step 5: Solve for x
    x = 2,183,728,161.52/66,779.13
  6. Step 6: Final answer
    x = 32,700.76

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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.