Home / 80,692.14-121,041.45-28,106.94

Finding the Fourth Proportional to 80,692.14, 121,041.45 and 28,106.94

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Solution

The fourth proportional to 80,692.14, 121,041.45 and 28,106.94 is: 42,161.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,692.14 : 121,041.45 = 28,106.94 : x
  2. Step 2: Convert to fraction form
    80,692.14/121,041.45 = 28,106.94/x
  3. Step 3: Cross multiply
    80,692.14x = 121,041.45 × 28,106.94
  4. Step 4: Simplify right side
    80,692.14x = 3,402,104,772.66
  5. Step 5: Solve for x
    x = 3,402,104,772.66/80,692.14
  6. Step 6: Final answer
    x = 42,161.54

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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.