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Finding the Fourth Proportional to 72,548.94, 100,122.49 and 40,285.22

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Solution

The fourth proportional to 72,548.94, 100,122.49 and 40,285.22 is: 55,596.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,548.94 : 100,122.49 = 40,285.22 : x
  2. Step 2: Convert to fraction form
    72,548.94/100,122.49 = 40,285.22/x
  3. Step 3: Cross multiply
    72,548.94x = 100,122.49 × 40,285.22
  4. Step 4: Simplify right side
    72,548.94x = 4,033,456,536.60
  5. Step 5: Solve for x
    x = 4,033,456,536.60/72,548.94
  6. Step 6: Final answer
    x = 55,596.36

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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.