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Finding the Fourth Proportional to 104,374.78, 144,035.90 and 56,627.78

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Solution

The fourth proportional to 104,374.78, 144,035.90 and 56,627.78 is: 78,145.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,374.78 : 144,035.90 = 56,627.78 : x
  2. Step 2: Convert to fraction form
    104,374.78/144,035.90 = 56,627.78/x
  3. Step 3: Cross multiply
    104,374.78x = 144,035.90 × 56,627.78
  4. Step 4: Simplify right side
    104,374.78x = 8,156,433,257.30
  5. Step 5: Solve for x
    x = 8,156,433,257.30/104,374.78
  6. Step 6: Final answer
    x = 78,145.63

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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.