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Finding the Fourth Proportional to 71,400.80, 107,028.30 and 41,803.40

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Solution

The fourth proportional to 71,400.80, 107,028.30 and 41,803.40 is: 62,662.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,400.80 : 107,028.30 = 41,803.40 : x
  2. Step 2: Convert to fraction form
    71,400.80/107,028.30 = 41,803.40/x
  3. Step 3: Cross multiply
    71,400.80x = 107,028.30 × 41,803.40
  4. Step 4: Simplify right side
    71,400.80x = 4,474,146,836.22
  5. Step 5: Solve for x
    x = 4,474,146,836.22/71,400.80
  6. Step 6: Final answer
    x = 62,662.42

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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.