Home / 79,138.12-109,211.88-43,327.52

Finding the Fourth Proportional to 79,138.12, 109,211.88 and 43,327.52

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Solution

The fourth proportional to 79,138.12, 109,211.88 and 43,327.52 is: 59,792.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,138.12 : 109,211.88 = 43,327.52 : x
  2. Step 2: Convert to fraction form
    79,138.12/109,211.88 = 43,327.52/x
  3. Step 3: Cross multiply
    79,138.12x = 109,211.88 × 43,327.52
  4. Step 4: Simplify right side
    79,138.12x = 4,731,879,914.94
  5. Step 5: Solve for x
    x = 4,731,879,914.94/79,138.12
  6. Step 6: Final answer
    x = 59,792.68

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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.