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Finding the Fourth Proportional to 78,813.84, 108,763.02 and 50,519.46

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Solution

The fourth proportional to 78,813.84, 108,763.02 and 50,519.46 is: 69,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,813.84 : 108,763.02 = 50,519.46 : x
  2. Step 2: Convert to fraction form
    78,813.84/108,763.02 = 50,519.46/x
  3. Step 3: Cross multiply
    78,813.84x = 108,763.02 × 50,519.46
  4. Step 4: Simplify right side
    78,813.84x = 5,494,649,038.37
  5. Step 5: Solve for x
    x = 5,494,649,038.37/78,813.84
  6. Step 6: Final answer
    x = 69,716.80

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1.5x scale

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.