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Finding the Fourth Proportional to 50,219.80, 75,329.70 and 12,779.80

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Solution

The fourth proportional to 50,219.80, 75,329.70 and 12,779.80 is: 19,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,219.80 : 75,329.70 = 12,779.80 : x
  2. Step 2: Convert to fraction form
    50,219.80/75,329.70 = 12,779.80/x
  3. Step 3: Cross multiply
    50,219.80x = 75,329.70 × 12,779.80
  4. Step 4: Simplify right side
    50,219.80x = 962,698,500.06
  5. Step 5: Solve for x
    x = 962,698,500.06/50,219.80
  6. Step 6: Final answer
    x = 19,169.70

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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.