Home / 66,422.08-91,661.40-36,208.60

Finding the Fourth Proportional to 66,422.08, 91,661.40 and 36,208.60

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Solution

The fourth proportional to 66,422.08, 91,661.40 and 36,208.60 is: 49,967.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,422.08 : 91,661.40 = 36,208.60 : x
  2. Step 2: Convert to fraction form
    66,422.08/91,661.40 = 36,208.60/x
  3. Step 3: Cross multiply
    66,422.08x = 91,661.40 × 36,208.60
  4. Step 4: Simplify right side
    66,422.08x = 3,318,930,968.04
  5. Step 5: Solve for x
    x = 3,318,930,968.04/66,422.08
  6. Step 6: Final answer
    x = 49,967.28

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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.