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Finding the Fourth Proportional to 40,400.52, 60,600.78 and 12,698.52

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Solution

The fourth proportional to 40,400.52, 60,600.78 and 12,698.52 is: 19,047.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,400.52 : 60,600.78 = 12,698.52 : x
  2. Step 2: Convert to fraction form
    40,400.52/60,600.78 = 12,698.52/x
  3. Step 3: Cross multiply
    40,400.52x = 60,600.78 × 12,698.52
  4. Step 4: Simplify right side
    40,400.52x = 769,539,850.35
  5. Step 5: Solve for x
    x = 769,539,850.35/40,400.52
  6. Step 6: Final answer
    x = 19,047.77

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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.