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Finding the Fourth Proportional to 90,485.56, 124,869.88 and 50,205.44

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Solution

The fourth proportional to 90,485.56, 124,869.88 and 50,205.44 is: 69,283.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,485.56 : 124,869.88 = 50,205.44 : x
  2. Step 2: Convert to fraction form
    90,485.56/124,869.88 = 50,205.44/x
  3. Step 3: Cross multiply
    90,485.56x = 124,869.88 × 50,205.44
  4. Step 4: Simplify right side
    90,485.56x = 6,269,147,268.15
  5. Step 5: Solve for x
    x = 6,269,147,268.15/90,485.56
  6. Step 6: Final answer
    x = 69,283.40

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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.