Home / 87,539.64-120,804.60-51,742.56

Finding the Fourth Proportional to 87,539.64, 120,804.60 and 51,742.56

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Solution

The fourth proportional to 87,539.64, 120,804.60 and 51,742.56 is: 71,404.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,539.64 : 120,804.60 = 51,742.56 : x
  2. Step 2: Convert to fraction form
    87,539.64/120,804.60 = 51,742.56/x
  3. Step 3: Cross multiply
    87,539.64x = 120,804.60 × 51,742.56
  4. Step 4: Simplify right side
    87,539.64x = 6,250,739,263.78
  5. Step 5: Solve for x
    x = 6,250,739,263.78/87,539.64
  6. Step 6: Final answer
    x = 71,404.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.