Home / 85,408.10-128,124.30-26,234.90

Finding the Fourth Proportional to 85,408.10, 128,124.30 and 26,234.90

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Solution

The fourth proportional to 85,408.10, 128,124.30 and 26,234.90 is: 39,356.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,408.10 : 128,124.30 = 26,234.90 : x
  2. Step 2: Convert to fraction form
    85,408.10/128,124.30 = 26,234.90/x
  3. Step 3: Cross multiply
    85,408.10x = 128,124.30 × 26,234.90
  4. Step 4: Simplify right side
    85,408.10x = 3,361,328,198.07
  5. Step 5: Solve for x
    x = 3,361,328,198.07/85,408.10
  6. Step 6: Final answer
    x = 39,356.08

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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.