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Finding the Fourth Proportional to 72,552.42, 108,808.02 and 28,169.70

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Solution

The fourth proportional to 72,552.42, 108,808.02 and 28,169.70 is: 42,246.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,552.42 : 108,808.02 = 28,169.70 : x
  2. Step 2: Convert to fraction form
    72,552.42/108,808.02 = 28,169.70/x
  3. Step 3: Cross multiply
    72,552.42x = 108,808.02 × 28,169.70
  4. Step 4: Simplify right side
    72,552.42x = 3,065,089,280.99
  5. Step 5: Solve for x
    x = 3,065,089,280.99/72,552.42
  6. Step 6: Final answer
    x = 42,246.55

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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.