Home / 43,319.40-64,979.10-12,150.60

Finding the Fourth Proportional to 43,319.40, 64,979.10 and 12,150.60

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Solution

The fourth proportional to 43,319.40, 64,979.10 and 12,150.60 is: 18,225.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,319.40 : 64,979.10 = 12,150.60 : x
  2. Step 2: Convert to fraction form
    43,319.40/64,979.10 = 12,150.60/x
  3. Step 3: Cross multiply
    43,319.40x = 64,979.10 × 12,150.60
  4. Step 4: Simplify right side
    43,319.40x = 789,535,052.46
  5. Step 5: Solve for x
    x = 789,535,052.46/43,319.40
  6. Step 6: Final answer
    x = 18,225.90

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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.