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Finding the Fourth Proportional to 72,366, 108,486.21 and 28,024.98

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Solution

The fourth proportional to 72,366, 108,486.21 and 28,024.98 is: 42,013.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,366 : 108,486.21 = 28,024.98 : x
  2. Step 2: Convert to fraction form
    72,366/108,486.21 = 28,024.98/x
  3. Step 3: Cross multiply
    72,366x = 108,486.21 × 28,024.98
  4. Step 4: Simplify right side
    72,366x = 3,040,323,865.53
  5. Step 5: Solve for x
    x = 3,040,323,865.53/72,366
  6. Step 6: Final answer
    x = 42,013.15

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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.