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Finding the Fourth Proportional to 76,692.55, 114,422.80 and 68,272.60

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Solution

The fourth proportional to 76,692.55, 114,422.80 and 68,272.60 is: 101,860.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,692.55 : 114,422.80 = 68,272.60 : x
  2. Step 2: Convert to fraction form
    76,692.55/114,422.80 = 68,272.60/x
  3. Step 3: Cross multiply
    76,692.55x = 114,422.80 × 68,272.60
  4. Step 4: Simplify right side
    76,692.55x = 7,811,942,055.28
  5. Step 5: Solve for x
    x = 7,811,942,055.28/76,692.55
  6. Step 6: Final answer
    x = 101,860.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.