Home / 77,979.83-107,611.67-42,169.73

Finding the Fourth Proportional to 77,979.83, 107,611.67 and 42,169.73

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Solution

The fourth proportional to 77,979.83, 107,611.67 and 42,169.73 is: 58,193.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,979.83 : 107,611.67 = 42,169.73 : x
  2. Step 2: Convert to fraction form
    77,979.83/107,611.67 = 42,169.73/x
  3. Step 3: Cross multiply
    77,979.83x = 107,611.67 × 42,169.73
  4. Step 4: Simplify right side
    77,979.83x = 4,537,954,636.12
  5. Step 5: Solve for x
    x = 4,537,954,636.12/77,979.83
  6. Step 6: Final answer
    x = 58,193.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.