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Finding the Fourth Proportional to 60,863.42, 91,289.99 and 20,879.12

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Solution

The fourth proportional to 60,863.42, 91,289.99 and 20,879.12 is: 31,316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,863.42 : 91,289.99 = 20,879.12 : x
  2. Step 2: Convert to fraction form
    60,863.42/91,289.99 = 20,879.12/x
  3. Step 3: Cross multiply
    60,863.42x = 91,289.99 × 20,879.12
  4. Step 4: Simplify right side
    60,863.42x = 1,906,054,095.16
  5. Step 5: Solve for x
    x = 1,906,054,095.16/60,863.42
  6. Step 6: Final answer
    x = 31,316.91

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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.