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Finding the Fourth Proportional to 115,284.60, 172,912.32 and 36,406.80

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Solution

The fourth proportional to 115,284.60, 172,912.32 and 36,406.80 is: 54,605.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,284.60 : 172,912.32 = 36,406.80 : x
  2. Step 2: Convert to fraction form
    115,284.60/172,912.32 = 36,406.80/x
  3. Step 3: Cross multiply
    115,284.60x = 172,912.32 × 36,406.80
  4. Step 4: Simplify right side
    115,284.60x = 6,295,184,251.78
  5. Step 5: Solve for x
    x = 6,295,184,251.78/115,284.60
  6. Step 6: Final answer
    x = 54,605.60

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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.