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Finding the Fourth Proportional to 45,261.60, 68,007.60 and 40,192.80

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Solution

The fourth proportional to 45,261.60, 68,007.60 and 40,192.80 is: 60,391.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,261.60 : 68,007.60 = 40,192.80 : x
  2. Step 2: Convert to fraction form
    45,261.60/68,007.60 = 40,192.80/x
  3. Step 3: Cross multiply
    45,261.60x = 68,007.60 × 40,192.80
  4. Step 4: Simplify right side
    45,261.60x = 2,733,415,865.28
  5. Step 5: Solve for x
    x = 2,733,415,865.28/45,261.60
  6. Step 6: Final answer
    x = 60,391.50

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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.