Home / 66,021.06-91,108.80-35,806.26

Finding the Fourth Proportional to 66,021.06, 91,108.80 and 35,806.26

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Solution

The fourth proportional to 66,021.06, 91,108.80 and 35,806.26 is: 49,412.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021.06 : 91,108.80 = 35,806.26 : x
  2. Step 2: Convert to fraction form
    66,021.06/91,108.80 = 35,806.26/x
  3. Step 3: Cross multiply
    66,021.06x = 91,108.80 × 35,806.26
  4. Step 4: Simplify right side
    66,021.06x = 3,262,265,381.09
  5. Step 5: Solve for x
    x = 3,262,265,381.09/66,021.06
  6. Step 6: Final answer
    x = 49,412.50

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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.