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Finding the Fourth Proportional to 84,630.30, 126,945.45 and 49,551.90

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Solution

The fourth proportional to 84,630.30, 126,945.45 and 49,551.90 is: 74,327.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,630.30 : 126,945.45 = 49,551.90 : x
  2. Step 2: Convert to fraction form
    84,630.30/126,945.45 = 49,551.90/x
  3. Step 3: Cross multiply
    84,630.30x = 126,945.45 × 49,551.90
  4. Step 4: Simplify right side
    84,630.30x = 6,290,388,243.86
  5. Step 5: Solve for x
    x = 6,290,388,243.86/84,630.30
  6. Step 6: Final answer
    x = 74,327.85

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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.