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Finding the Fourth Proportional to 90,305.63, 124,620.39 and 49,469.45

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Solution

The fourth proportional to 90,305.63, 124,620.39 and 49,469.45 is: 68,267.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,305.63 : 124,620.39 = 49,469.45 : x
  2. Step 2: Convert to fraction form
    90,305.63/124,620.39 = 49,469.45/x
  3. Step 3: Cross multiply
    90,305.63x = 124,620.39 × 49,469.45
  4. Step 4: Simplify right side
    90,305.63x = 6,164,901,528.98
  5. Step 5: Solve for x
    x = 6,164,901,528.98/90,305.63
  6. Step 6: Final answer
    x = 68,267.08

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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.