Home / 76,931.70-115,310.06-32,530.74

Finding the Fourth Proportional to 76,931.70, 115,310.06 and 32,530.74

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Solution

The fourth proportional to 76,931.70, 115,310.06 and 32,530.74 is: 48,759.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,931.70 : 115,310.06 = 32,530.74 : x
  2. Step 2: Convert to fraction form
    76,931.70/115,310.06 = 32,530.74/x
  3. Step 3: Cross multiply
    76,931.70x = 115,310.06 × 32,530.74
  4. Step 4: Simplify right side
    76,931.70x = 3,751,121,581.24
  5. Step 5: Solve for x
    x = 3,751,121,581.24/76,931.70
  6. Step 6: Final answer
    x = 48,759.11

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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.