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Finding the Fourth Proportional to 76,201.24, 105,169.76 and 45,990.88

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Solution

The fourth proportional to 76,201.24, 105,169.76 and 45,990.88 is: 63,474.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,201.24 : 105,169.76 = 45,990.88 : x
  2. Step 2: Convert to fraction form
    76,201.24/105,169.76 = 45,990.88/x
  3. Step 3: Cross multiply
    76,201.24x = 105,169.76 × 45,990.88
  4. Step 4: Simplify right side
    76,201.24x = 4,836,849,811.79
  5. Step 5: Solve for x
    x = 4,836,849,811.79/76,201.24
  6. Step 6: Final answer
    x = 63,474.69

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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.