Home / 77,680.36-107,182.83-45,408.75

Finding the Fourth Proportional to 77,680.36, 107,182.83 and 45,408.75

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Solution

The fourth proportional to 77,680.36, 107,182.83 and 45,408.75 is: 62,654.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,680.36 : 107,182.83 = 45,408.75 : x
  2. Step 2: Convert to fraction form
    77,680.36/107,182.83 = 45,408.75/x
  3. Step 3: Cross multiply
    77,680.36x = 107,182.83 × 45,408.75
  4. Step 4: Simplify right side
    77,680.36x = 4,867,037,568.80
  5. Step 5: Solve for x
    x = 4,867,037,568.80/77,680.36
  6. Step 6: Final answer
    x = 62,654.67

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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.