Home / 45,235.95-67,821.12-30,408.09

Finding the Fourth Proportional to 45,235.95, 67,821.12 and 30,408.09

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Solution

The fourth proportional to 45,235.95, 67,821.12 and 30,408.09 is: 45,590.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,235.95 : 67,821.12 = 30,408.09 : x
  2. Step 2: Convert to fraction form
    45,235.95/67,821.12 = 30,408.09/x
  3. Step 3: Cross multiply
    45,235.95x = 67,821.12 × 30,408.09
  4. Step 4: Simplify right side
    45,235.95x = 2,062,310,720.86
  5. Step 5: Solve for x
    x = 2,062,310,720.86/45,235.95
  6. Step 6: Final answer
    x = 45,590.08

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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.