Home / 47,981.64-66,171.60-30,078.60

Finding the Fourth Proportional to 47,981.64, 66,171.60 and 30,078.60

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Solution

The fourth proportional to 47,981.64, 66,171.60 and 30,078.60 is: 41,481.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,981.64 : 66,171.60 = 30,078.60 : x
  2. Step 2: Convert to fraction form
    47,981.64/66,171.60 = 30,078.60/x
  3. Step 3: Cross multiply
    47,981.64x = 66,171.60 × 30,078.60
  4. Step 4: Simplify right side
    47,981.64x = 1,990,349,087.76
  5. Step 5: Solve for x
    x = 1,990,349,087.76/47,981.64
  6. Step 6: Final answer
    x = 41,481.47

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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.