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Finding the Fourth Proportional to 72,588.93, 108,841.01 and 28,163.76

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Solution

The fourth proportional to 72,588.93, 108,841.01 and 28,163.76 is: 42,229.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,588.93 : 108,841.01 = 28,163.76 : x
  2. Step 2: Convert to fraction form
    72,588.93/108,841.01 = 28,163.76/x
  3. Step 3: Cross multiply
    72,588.93x = 108,841.01 × 28,163.76
  4. Step 4: Simplify right side
    72,588.93x = 3,065,371,942.98
  5. Step 5: Solve for x
    x = 3,065,371,942.98/72,588.93
  6. Step 6: Final answer
    x = 42,229.19

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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.