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Finding the Fourth Proportional to 76,820.84, 115,155.48 and 36,793.60

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Solution

The fourth proportional to 76,820.84, 115,155.48 and 36,793.60 is: 55,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,820.84 : 115,155.48 = 36,793.60 : x
  2. Step 2: Convert to fraction form
    76,820.84/115,155.48 = 36,793.60/x
  3. Step 3: Cross multiply
    76,820.84x = 115,155.48 × 36,793.60
  4. Step 4: Simplify right side
    76,820.84x = 4,236,984,668.93
  5. Step 5: Solve for x
    x = 4,236,984,668.93/76,820.84
  6. Step 6: Final answer
    x = 55,154.10

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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.