Home / 67,228.20-100,818.69-19,830.68

Finding the Fourth Proportional to 67,228.20, 100,818.69 and 19,830.68

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Solution

The fourth proportional to 67,228.20, 100,818.69 and 19,830.68 is: 29,739.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,228.20 : 100,818.69 = 19,830.68 : x
  2. Step 2: Convert to fraction form
    67,228.20/100,818.69 = 19,830.68/x
  3. Step 3: Cross multiply
    67,228.20x = 100,818.69 × 19,830.68
  4. Step 4: Simplify right side
    67,228.20x = 1,999,302,675.32
  5. Step 5: Solve for x
    x = 1,999,302,675.32/67,228.20
  6. Step 6: Final answer
    x = 29,739.05

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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.