Home / 66,390.10-91,617.18-36,175.68

Finding the Fourth Proportional to 66,390.10, 91,617.18 and 36,175.68

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Solution

The fourth proportional to 66,390.10, 91,617.18 and 36,175.68 is: 49,921.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,390.10 : 91,617.18 = 36,175.68 : x
  2. Step 2: Convert to fraction form
    66,390.10/91,617.18 = 36,175.68/x
  3. Step 3: Cross multiply
    66,390.10x = 91,617.18 × 36,175.68
  4. Step 4: Simplify right side
    66,390.10x = 3,314,313,786.18
  5. Step 5: Solve for x
    x = 3,314,313,786.18/66,390.10
  6. Step 6: Final answer
    x = 49,921.81

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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.