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Finding the Fourth Proportional to 105,229.58, 145,211.42 and 57,473.72

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Solution

The fourth proportional to 105,229.58, 145,211.42 and 57,473.72 is: 79,310.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,229.58 : 145,211.42 = 57,473.72 : x
  2. Step 2: Convert to fraction form
    105,229.58/145,211.42 = 57,473.72/x
  3. Step 3: Cross multiply
    105,229.58x = 145,211.42 × 57,473.72
  4. Step 4: Simplify right side
    105,229.58x = 8,345,840,493.88
  5. Step 5: Solve for x
    x = 8,345,840,493.88/105,229.58
  6. Step 6: Final answer
    x = 79,310.78

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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.