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Finding the Fourth Proportional to 43,762.80, 65,638.72 and 12,175.23

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Solution

The fourth proportional to 43,762.80, 65,638.72 and 12,175.23 is: 18,261.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,762.80 : 65,638.72 = 12,175.23 : x
  2. Step 2: Convert to fraction form
    43,762.80/65,638.72 = 12,175.23/x
  3. Step 3: Cross multiply
    43,762.80x = 65,638.72 × 12,175.23
  4. Step 4: Simplify right side
    43,762.80x = 799,166,318.37
  5. Step 5: Solve for x
    x = 799,166,318.37/43,762.80
  6. Step 6: Final answer
    x = 18,261.32

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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.