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Finding the Fourth Proportional to 53,765.92, 80,671.92 and 18,686.44

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Solution

The fourth proportional to 53,765.92, 80,671.92 and 18,686.44 is: 28,037.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,765.92 : 80,671.92 = 18,686.44 : x
  2. Step 2: Convert to fraction form
    53,765.92/80,671.92 = 18,686.44/x
  3. Step 3: Cross multiply
    53,765.92x = 80,671.92 × 18,686.44
  4. Step 4: Simplify right side
    53,765.92x = 1,507,470,992.76
  5. Step 5: Solve for x
    x = 1,507,470,992.76/53,765.92
  6. Step 6: Final answer
    x = 28,037.67

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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.