Home / 76,781.39-115,187.74-32,408.10

Finding the Fourth Proportional to 76,781.39, 115,187.74 and 32,408.10

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Solution

The fourth proportional to 76,781.39, 115,187.74 and 32,408.10 is: 48,618.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,781.39 : 115,187.74 = 32,408.10 : x
  2. Step 2: Convert to fraction form
    76,781.39/115,187.74 = 32,408.10/x
  3. Step 3: Cross multiply
    76,781.39x = 115,187.74 × 32,408.10
  4. Step 4: Simplify right side
    76,781.39x = 3,733,015,715.67
  5. Step 5: Solve for x
    x = 3,733,015,715.67/76,781.39
  6. Step 6: Final answer
    x = 48,618.76

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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.