Home / 70,245.12-105,367.76-28,692.12

Finding the Fourth Proportional to 70,245.12, 105,367.76 and 28,692.12

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Solution

The fourth proportional to 70,245.12, 105,367.76 and 28,692.12 is: 43,038.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,245.12 : 105,367.76 = 28,692.12 : x
  2. Step 2: Convert to fraction form
    70,245.12/105,367.76 = 28,692.12/x
  3. Step 3: Cross multiply
    70,245.12x = 105,367.76 × 28,692.12
  4. Step 4: Simplify right side
    70,245.12x = 3,023,224,414.05
  5. Step 5: Solve for x
    x = 3,023,224,414.05/70,245.12
  6. Step 6: Final answer
    x = 43,038.21

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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.