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Finding the Fourth Proportional to 92,003.20, 138,004.80 and 28,828.60

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Solution

The fourth proportional to 92,003.20, 138,004.80 and 28,828.60 is: 43,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,003.20 : 138,004.80 = 28,828.60 : x
  2. Step 2: Convert to fraction form
    92,003.20/138,004.80 = 28,828.60/x
  3. Step 3: Cross multiply
    92,003.20x = 138,004.80 × 28,828.60
  4. Step 4: Simplify right side
    92,003.20x = 3,978,485,177.28
  5. Step 5: Solve for x
    x = 3,978,485,177.28/92,003.20
  6. Step 6: Final answer
    x = 43,242.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.