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Finding the Fourth Proportional to 43,907.60, 65,861.40 and 11,075.60

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Solution

The fourth proportional to 43,907.60, 65,861.40 and 11,075.60 is: 16,613.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,907.60 : 65,861.40 = 11,075.60 : x
  2. Step 2: Convert to fraction form
    43,907.60/65,861.40 = 11,075.60/x
  3. Step 3: Cross multiply
    43,907.60x = 65,861.40 × 11,075.60
  4. Step 4: Simplify right side
    43,907.60x = 729,454,521.84
  5. Step 5: Solve for x
    x = 729,454,521.84/43,907.60
  6. Step 6: Final answer
    x = 16,613.40

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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.