Home / 80,356.07-120,554.17-56,709.77

Finding the Fourth Proportional to 80,356.07, 120,554.17 and 56,709.77

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Solution

The fourth proportional to 80,356.07, 120,554.17 and 56,709.77 is: 85,078.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,356.07 : 120,554.17 = 56,709.77 : x
  2. Step 2: Convert to fraction form
    80,356.07/120,554.17 = 56,709.77/x
  3. Step 3: Cross multiply
    80,356.07x = 120,554.17 × 56,709.77
  4. Step 4: Simplify right side
    80,356.07x = 6,836,599,093.63
  5. Step 5: Solve for x
    x = 6,836,599,093.63/80,356.07
  6. Step 6: Final answer
    x = 85,078.82

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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.