Home / 66,021.38-91,109.23-35,806.58

Finding the Fourth Proportional to 66,021.38, 91,109.23 and 35,806.58

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Solution

The fourth proportional to 66,021.38, 91,109.23 and 35,806.58 is: 49,412.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021.38 : 91,109.23 = 35,806.58 : x
  2. Step 2: Convert to fraction form
    66,021.38/91,109.23 = 35,806.58/x
  3. Step 3: Cross multiply
    66,021.38x = 91,109.23 × 35,806.58
  4. Step 4: Simplify right side
    66,021.38x = 3,262,309,477.19
  5. Step 5: Solve for x
    x = 3,262,309,477.19/66,021.38
  6. Step 6: Final answer
    x = 49,412.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.