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Finding the Fourth Proportional to 53,919.60, 80,879.40 and 51,500.40

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Solution

The fourth proportional to 53,919.60, 80,879.40 and 51,500.40 is: 77,250.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,919.60 : 80,879.40 = 51,500.40 : x
  2. Step 2: Convert to fraction form
    53,919.60/80,879.40 = 51,500.40/x
  3. Step 3: Cross multiply
    53,919.60x = 80,879.40 × 51,500.40
  4. Step 4: Simplify right side
    53,919.60x = 4,165,321,451.76
  5. Step 5: Solve for x
    x = 4,165,321,451.76/53,919.60
  6. Step 6: Final answer
    x = 77,250.60

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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.