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Finding the Fourth Proportional to 53,018, 73,163.28 and 30,356.24

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Solution

The fourth proportional to 53,018, 73,163.28 and 30,356.24 is: 41,890.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,018 : 73,163.28 = 30,356.24 : x
  2. Step 2: Convert to fraction form
    53,018/73,163.28 = 30,356.24/x
  3. Step 3: Cross multiply
    53,018x = 73,163.28 × 30,356.24
  4. Step 4: Simplify right side
    53,018x = 2,220,962,086.87
  5. Step 5: Solve for x
    x = 2,220,962,086.87/53,018
  6. Step 6: Final answer
    x = 41,890.72

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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.