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Finding the Fourth Proportional to 30,967.93, 46,448.73 and 8,480.61

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Solution

The fourth proportional to 30,967.93, 46,448.73 and 8,480.61 is: 12,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,967.93 : 46,448.73 = 8,480.61 : x
  2. Step 2: Convert to fraction form
    30,967.93/46,448.73 = 8,480.61/x
  3. Step 3: Cross multiply
    30,967.93x = 46,448.73 × 8,480.61
  4. Step 4: Simplify right side
    30,967.93x = 393,913,564.13
  5. Step 5: Solve for x
    x = 393,913,564.13/30,967.93
  6. Step 6: Final answer
    x = 12,720.05

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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.