Home / 47,971.60-66,221.28-30,076.80

Finding the Fourth Proportional to 47,971.60, 66,221.28 and 30,076.80

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Solution

The fourth proportional to 47,971.60, 66,221.28 and 30,076.80 is: 41,518.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,971.60 : 66,221.28 = 30,076.80 : x
  2. Step 2: Convert to fraction form
    47,971.60/66,221.28 = 30,076.80/x
  3. Step 3: Cross multiply
    47,971.60x = 66,221.28 × 30,076.80
  4. Step 4: Simplify right side
    47,971.60x = 1,991,724,194.30
  5. Step 5: Solve for x
    x = 1,991,724,194.30/47,971.60
  6. Step 6: Final answer
    x = 41,518.82

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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.