Home / 78,055.14-117,083.01-18,890.73

Finding the Fourth Proportional to 78,055.14, 117,083.01 and 18,890.73

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Solution

The fourth proportional to 78,055.14, 117,083.01 and 18,890.73 is: 28,336.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,055.14 : 117,083.01 = 18,890.73 : x
  2. Step 2: Convert to fraction form
    78,055.14/117,083.01 = 18,890.73/x
  3. Step 3: Cross multiply
    78,055.14x = 117,083.01 × 18,890.73
  4. Step 4: Simplify right side
    78,055.14x = 2,211,783,529.50
  5. Step 5: Solve for x
    x = 2,211,783,529.50/78,055.14
  6. Step 6: Final answer
    x = 28,336.17

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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.