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Finding the Fourth Proportional to 90,445.80, 124,821.56 and 50,163.40

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Solution

The fourth proportional to 90,445.80, 124,821.56 and 50,163.40 is: 69,229.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,445.80 : 124,821.56 = 50,163.40 : x
  2. Step 2: Convert to fraction form
    90,445.80/124,821.56 = 50,163.40/x
  3. Step 3: Cross multiply
    90,445.80x = 124,821.56 × 50,163.40
  4. Step 4: Simplify right side
    90,445.80x = 6,261,473,842.90
  5. Step 5: Solve for x
    x = 6,261,473,842.90/90,445.80
  6. Step 6: Final answer
    x = 69,229.02

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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.