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Finding the Fourth Proportional to 104,274.90, 143,900.10 and 56,529

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Solution

The fourth proportional to 104,274.90, 143,900.10 and 56,529 is: 78,010.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,274.90 : 143,900.10 = 56,529 : x
  2. Step 2: Convert to fraction form
    104,274.90/143,900.10 = 56,529/x
  3. Step 3: Cross multiply
    104,274.90x = 143,900.10 × 56,529
  4. Step 4: Simplify right side
    104,274.90x = 8,134,528,752.90
  5. Step 5: Solve for x
    x = 8,134,528,752.90/104,274.90
  6. Step 6: Final answer
    x = 78,010.42

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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.