Home / 66,149.66-99,238.14-21,779.06

Finding the Fourth Proportional to 66,149.66, 99,238.14 and 21,779.06

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Solution

The fourth proportional to 66,149.66, 99,238.14 and 21,779.06 is: 32,673.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,149.66 : 99,238.14 = 21,779.06 : x
  2. Step 2: Convert to fraction form
    66,149.66/99,238.14 = 21,779.06/x
  3. Step 3: Cross multiply
    66,149.66x = 99,238.14 × 21,779.06
  4. Step 4: Simplify right side
    66,149.66x = 2,161,313,405.35
  5. Step 5: Solve for x
    x = 2,161,313,405.35/66,149.66
  6. Step 6: Final answer
    x = 32,673.08

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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.