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Finding the Fourth Proportional to 89,709.60, 134,595.42 and 39,824.64

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Solution

The fourth proportional to 89,709.60, 134,595.42 and 39,824.64 is: 59,750.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,709.60 : 134,595.42 = 39,824.64 : x
  2. Step 2: Convert to fraction form
    89,709.60/134,595.42 = 39,824.64/x
  3. Step 3: Cross multiply
    89,709.60x = 134,595.42 × 39,824.64
  4. Step 4: Simplify right side
    89,709.60x = 5,360,214,147.15
  5. Step 5: Solve for x
    x = 5,360,214,147.15/89,709.60
  6. Step 6: Final answer
    x = 59,750.73

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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.