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Finding the Fourth Proportional to 57,907.40, 86,861.10 and 40,994.60

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Solution

The fourth proportional to 57,907.40, 86,861.10 and 40,994.60 is: 61,491.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,907.40 : 86,861.10 = 40,994.60 : x
  2. Step 2: Convert to fraction form
    57,907.40/86,861.10 = 40,994.60/x
  3. Step 3: Cross multiply
    57,907.40x = 86,861.10 × 40,994.60
  4. Step 4: Simplify right side
    57,907.40x = 3,560,836,050.06
  5. Step 5: Solve for x
    x = 3,560,836,050.06/57,907.40
  6. Step 6: Final answer
    x = 61,491.90

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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.