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Finding the Fourth Proportional to 104,725.52, 144,516.92 and 56,978.92

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Solution

The fourth proportional to 104,725.52, 144,516.92 and 56,978.92 is: 78,628.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,725.52 : 144,516.92 = 56,978.92 : x
  2. Step 2: Convert to fraction form
    104,725.52/144,516.92 = 56,978.92/x
  3. Step 3: Cross multiply
    104,725.52x = 144,516.92 × 56,978.92
  4. Step 4: Simplify right side
    104,725.52x = 8,234,418,023.33
  5. Step 5: Solve for x
    x = 8,234,418,023.33/104,725.52
  6. Step 6: Final answer
    x = 78,628.57

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1.5x scale

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.