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Finding the Fourth Proportional to 76,168.92, 105,103.26 and 42,634.92

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Solution

The fourth proportional to 76,168.92, 105,103.26 and 42,634.92 is: 58,830.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,168.92 : 105,103.26 = 42,634.92 : x
  2. Step 2: Convert to fraction form
    76,168.92/105,103.26 = 42,634.92/x
  3. Step 3: Cross multiply
    76,168.92x = 105,103.26 × 42,634.92
  4. Step 4: Simplify right side
    76,168.92x = 4,481,069,081.84
  5. Step 5: Solve for x
    x = 4,481,069,081.84/76,168.92
  6. Step 6: Final answer
    x = 58,830.68

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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.