Home / 66,021.31-91,109.14-35,806.51

Finding the Fourth Proportional to 66,021.31, 91,109.14 and 35,806.51

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Solution

The fourth proportional to 66,021.31, 91,109.14 and 35,806.51 is: 49,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021.31 : 91,109.14 = 35,806.51 : x
  2. Step 2: Convert to fraction form
    66,021.31/91,109.14 = 35,806.51/x
  3. Step 3: Cross multiply
    66,021.31x = 91,109.14 × 35,806.51
  4. Step 4: Simplify right side
    66,021.31x = 3,262,300,332.50
  5. Step 5: Solve for x
    x = 3,262,300,332.50/66,021.31
  6. Step 6: Final answer
    x = 49,412.84

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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.