Home / 78,136.50-107,822.00-45,867.67

Finding the Fourth Proportional to 78,136.50, 107,822.00 and 45,867.67

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Solution

The fourth proportional to 78,136.50, 107,822.00 and 45,867.67 is: 63,293.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,136.50 : 107,822.00 = 45,867.67 : x
  2. Step 2: Convert to fraction form
    78,136.50/107,822.00 = 45,867.67/x
  3. Step 3: Cross multiply
    78,136.50x = 107,822.00 × 45,867.67
  4. Step 4: Simplify right side
    78,136.50x = 4,945,543,759.85
  5. Step 5: Solve for x
    x = 4,945,543,759.85/78,136.50
  6. Step 6: Final answer
    x = 63,293.64

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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.