Home / 85,340.70-117,751.32-49,509.95

Finding the Fourth Proportional to 85,340.70, 117,751.32 and 49,509.95

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Solution

The fourth proportional to 85,340.70, 117,751.32 and 49,509.95 is: 68,312.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,340.70 : 117,751.32 = 49,509.95 : x
  2. Step 2: Convert to fraction form
    85,340.70/117,751.32 = 49,509.95/x
  3. Step 3: Cross multiply
    85,340.70x = 117,751.32 × 49,509.95
  4. Step 4: Simplify right side
    85,340.70x = 5,829,861,376.88
  5. Step 5: Solve for x
    x = 5,829,861,376.88/85,340.70
  6. Step 6: Final answer
    x = 68,312.79

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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.