Home / 80,664.87-120,830.85-47,283.56

Finding the Fourth Proportional to 80,664.87, 120,830.85 and 47,283.56

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Solution

The fourth proportional to 80,664.87, 120,830.85 and 47,283.56 is: 70,827.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,664.87 : 120,830.85 = 47,283.56 : x
  2. Step 2: Convert to fraction form
    80,664.87/120,830.85 = 47,283.56/x
  3. Step 3: Cross multiply
    80,664.87x = 120,830.85 × 47,283.56
  4. Step 4: Simplify right side
    80,664.87x = 5,713,312,141.67
  5. Step 5: Solve for x
    x = 5,713,312,141.67/80,664.87
  6. Step 6: Final answer
    x = 70,827.76

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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.