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Finding the Fourth Proportional to 76,650.40, 105,790.20 and 44,813.20

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Solution

The fourth proportional to 76,650.40, 105,790.20 and 44,813.20 is: 61,849.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,650.40 : 105,790.20 = 44,813.20 : x
  2. Step 2: Convert to fraction form
    76,650.40/105,790.20 = 44,813.20/x
  3. Step 3: Cross multiply
    76,650.40x = 105,790.20 × 44,813.20
  4. Step 4: Simplify right side
    76,650.40x = 4,740,797,390.64
  5. Step 5: Solve for x
    x = 4,740,797,390.64/76,650.40
  6. Step 6: Final answer
    x = 61,849.61

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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.