Home / 81,000.88-121,500.30-27,692.32

Finding the Fourth Proportional to 81,000.88, 121,500.30 and 27,692.32

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Solution

The fourth proportional to 81,000.88, 121,500.30 and 27,692.32 is: 41,538.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,000.88 : 121,500.30 = 27,692.32 : x
  2. Step 2: Convert to fraction form
    81,000.88/121,500.30 = 27,692.32/x
  3. Step 3: Cross multiply
    81,000.88x = 121,500.30 × 27,692.32
  4. Step 4: Simplify right side
    81,000.88x = 3,364,625,187.70
  5. Step 5: Solve for x
    x = 3,364,625,187.70/81,000.88
  6. Step 6: Final answer
    x = 41,538.13

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1.5x scale

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.