Home / 85,629.78-118,172.39-47,904.03

Finding the Fourth Proportional to 85,629.78, 118,172.39 and 47,904.03

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Solution

The fourth proportional to 85,629.78, 118,172.39 and 47,904.03 is: 66,109.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,629.78 : 118,172.39 = 47,904.03 : x
  2. Step 2: Convert to fraction form
    85,629.78/118,172.39 = 47,904.03/x
  3. Step 3: Cross multiply
    85,629.78x = 118,172.39 × 47,904.03
  4. Step 4: Simplify right side
    85,629.78x = 5,660,933,476.21
  5. Step 5: Solve for x
    x = 5,660,933,476.21/85,629.78
  6. Step 6: Final answer
    x = 66,109.40

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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.