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Finding the Fourth Proportional to 104,375.78, 144,037.28 and 56,628.78

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Solution

The fourth proportional to 104,375.78, 144,037.28 and 56,628.78 is: 78,147.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,375.78 : 144,037.28 = 56,628.78 : x
  2. Step 2: Convert to fraction form
    104,375.78/144,037.28 = 56,628.78/x
  3. Step 3: Cross multiply
    104,375.78x = 144,037.28 × 56,628.78
  4. Step 4: Simplify right side
    104,375.78x = 8,156,655,440.92
  5. Step 5: Solve for x
    x = 8,156,655,440.92/104,375.78
  6. Step 6: Final answer
    x = 78,147.01

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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.