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Finding the Fourth Proportional to 89,643.60, 134,400.60 and 50,212.80

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Solution

The fourth proportional to 89,643.60, 134,400.60 and 50,212.80 is: 75,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,643.60 : 134,400.60 = 50,212.80 : x
  2. Step 2: Convert to fraction form
    89,643.60/134,400.60 = 50,212.80/x
  3. Step 3: Cross multiply
    89,643.60x = 134,400.60 × 50,212.80
  4. Step 4: Simplify right side
    89,643.60x = 6,748,630,447.68
  5. Step 5: Solve for x
    x = 6,748,630,447.68/89,643.60
  6. Step 6: Final answer
    x = 75,282.90

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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.