Home / 77,354.21-115,910.55-53,707.88

Finding the Fourth Proportional to 77,354.21, 115,910.55 and 53,707.88

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Solution

The fourth proportional to 77,354.21, 115,910.55 and 53,707.88 is: 80,477.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,354.21 : 115,910.55 = 53,707.88 : x
  2. Step 2: Convert to fraction form
    77,354.21/115,910.55 = 53,707.88/x
  3. Step 3: Cross multiply
    77,354.21x = 115,910.55 × 53,707.88
  4. Step 4: Simplify right side
    77,354.21x = 6,225,309,330.58
  5. Step 5: Solve for x
    x = 6,225,309,330.58/77,354.21
  6. Step 6: Final answer
    x = 80,477.97

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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.