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Finding the Fourth Proportional to 72,596.94, 100,184.40 and 40,768.80

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Solution

The fourth proportional to 72,596.94, 100,184.40 and 40,768.80 is: 56,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,596.94 : 100,184.40 = 40,768.80 : x
  2. Step 2: Convert to fraction form
    72,596.94/100,184.40 = 40,768.80/x
  3. Step 3: Cross multiply
    72,596.94x = 100,184.40 × 40,768.80
  4. Step 4: Simplify right side
    72,596.94x = 4,084,397,766.72
  5. Step 5: Solve for x
    x = 4,084,397,766.72/72,596.94
  6. Step 6: Final answer
    x = 56,261.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.