Home / 76,105.92-105,126.57-58,419.48

Finding the Fourth Proportional to 76,105.92, 105,126.57 and 58,419.48

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Solution

The fourth proportional to 76,105.92, 105,126.57 and 58,419.48 is: 80,695.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,105.92 : 105,126.57 = 58,419.48 : x
  2. Step 2: Convert to fraction form
    76,105.92/105,126.57 = 58,419.48/x
  3. Step 3: Cross multiply
    76,105.92x = 105,126.57 × 58,419.48
  4. Step 4: Simplify right side
    76,105.92x = 6,141,439,553.58
  5. Step 5: Solve for x
    x = 6,141,439,553.58/76,105.92
  6. Step 6: Final answer
    x = 80,695.95

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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.