Home / 76,612.92-105,723.80-42,619.64

Finding the Fourth Proportional to 76,612.92, 105,723.80 and 42,619.64

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Solution

The fourth proportional to 76,612.92, 105,723.80 and 42,619.64 is: 58,813.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,612.92 : 105,723.80 = 42,619.64 : x
  2. Step 2: Convert to fraction form
    76,612.92/105,723.80 = 42,619.64/x
  3. Step 3: Cross multiply
    76,612.92x = 105,723.80 × 42,619.64
  4. Step 4: Simplify right side
    76,612.92x = 4,505,910,295.43
  5. Step 5: Solve for x
    x = 4,505,910,295.43/76,612.92
  6. Step 6: Final answer
    x = 58,813.97

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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.