Home / 90,408.85-124,768.32-51,650.09

Finding the Fourth Proportional to 90,408.85, 124,768.32 and 51,650.09

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Solution

The fourth proportional to 90,408.85, 124,768.32 and 51,650.09 is: 71,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,408.85 : 124,768.32 = 51,650.09 : x
  2. Step 2: Convert to fraction form
    90,408.85/124,768.32 = 51,650.09/x
  3. Step 3: Cross multiply
    90,408.85x = 124,768.32 × 51,650.09
  4. Step 4: Simplify right side
    90,408.85x = 6,444,294,957.15
  5. Step 5: Solve for x
    x = 6,444,294,957.15/90,408.85
  6. Step 6: Final answer
    x = 71,279.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.