Home / 51,485.60-77,221.20-16,428.80

Finding the Fourth Proportional to 51,485.60, 77,221.20 and 16,428.80

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Solution

The fourth proportional to 51,485.60, 77,221.20 and 16,428.80 is: 24,640.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,485.60 : 77,221.20 = 16,428.80 : x
  2. Step 2: Convert to fraction form
    51,485.60/77,221.20 = 16,428.80/x
  3. Step 3: Cross multiply
    51,485.60x = 77,221.20 × 16,428.80
  4. Step 4: Simplify right side
    51,485.60x = 1,268,651,650.56
  5. Step 5: Solve for x
    x = 1,268,651,650.56/51,485.60
  6. Step 6: Final answer
    x = 24,640.90

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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.