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Finding the Fourth Proportional to 72,099.48, 99,493.02 and 40,270.44

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Solution

The fourth proportional to 72,099.48, 99,493.02 and 40,270.44 is: 55,570.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,099.48 : 99,493.02 = 40,270.44 : x
  2. Step 2: Convert to fraction form
    72,099.48/99,493.02 = 40,270.44/x
  3. Step 3: Cross multiply
    72,099.48x = 99,493.02 × 40,270.44
  4. Step 4: Simplify right side
    72,099.48x = 4,006,627,692.33
  5. Step 5: Solve for x
    x = 4,006,627,692.33/72,099.48
  6. Step 6: Final answer
    x = 55,570.83

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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.