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Finding the Fourth Proportional to 76,169.84, 114,223.32 and 28,776.88

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Solution

The fourth proportional to 76,169.84, 114,223.32 and 28,776.88 is: 43,153.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,169.84 : 114,223.32 = 28,776.88 : x
  2. Step 2: Convert to fraction form
    76,169.84/114,223.32 = 28,776.88/x
  3. Step 3: Cross multiply
    76,169.84x = 114,223.32 × 28,776.88
  4. Step 4: Simplify right side
    76,169.84x = 3,286,990,772.84
  5. Step 5: Solve for x
    x = 3,286,990,772.84/76,169.84
  6. Step 6: Final answer
    x = 43,153.44

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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.