Home / 66,832-92,228.16-39,975.64

Finding the Fourth Proportional to 66,832, 92,228.16 and 39,975.64

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Solution

The fourth proportional to 66,832, 92,228.16 and 39,975.64 is: 55,166.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,832 : 92,228.16 = 39,975.64 : x
  2. Step 2: Convert to fraction form
    66,832/92,228.16 = 39,975.64/x
  3. Step 3: Cross multiply
    66,832x = 92,228.16 × 39,975.64
  4. Step 4: Simplify right side
    66,832x = 3,686,879,722.02
  5. Step 5: Solve for x
    x = 3,686,879,722.02/66,832
  6. Step 6: Final answer
    x = 55,166.38

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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.