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Finding the Fourth Proportional to 66,170.19, 91,315.44 and 35,955.51

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Solution

The fourth proportional to 66,170.19, 91,315.44 and 35,955.51 is: 49,618.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,170.19 : 91,315.44 = 35,955.51 : x
  2. Step 2: Convert to fraction form
    66,170.19/91,315.44 = 35,955.51/x
  3. Step 3: Cross multiply
    66,170.19x = 91,315.44 × 35,955.51
  4. Step 4: Simplify right side
    66,170.19x = 3,283,293,805.03
  5. Step 5: Solve for x
    x = 3,283,293,805.03/66,170.19
  6. Step 6: Final answer
    x = 49,618.92

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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.