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Finding the Fourth Proportional to 56,611.20, 84,819.60 and 36,879.60

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Solution

The fourth proportional to 56,611.20, 84,819.60 and 36,879.60 is: 55,256.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,611.20 : 84,819.60 = 36,879.60 : x
  2. Step 2: Convert to fraction form
    56,611.20/84,819.60 = 36,879.60/x
  3. Step 3: Cross multiply
    56,611.20x = 84,819.60 × 36,879.60
  4. Step 4: Simplify right side
    56,611.20x = 3,128,112,920.16
  5. Step 5: Solve for x
    x = 3,128,112,920.16/56,611.20
  6. Step 6: Final answer
    x = 55,256.08

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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.