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Finding the Fourth Proportional to 54,731.50, 75,529.50 and 29,581

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Solution

The fourth proportional to 54,731.50, 75,529.50 and 29,581 is: 40,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,731.50 : 75,529.50 = 29,581 : x
  2. Step 2: Convert to fraction form
    54,731.50/75,529.50 = 29,581/x
  3. Step 3: Cross multiply
    54,731.50x = 75,529.50 × 29,581
  4. Step 4: Simplify right side
    54,731.50x = 2,234,238,139.50
  5. Step 5: Solve for x
    x = 2,234,238,139.50/54,731.50
  6. Step 6: Final answer
    x = 40,821.80

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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.