Home / 76,189.20-105,150.48-45,991.80

Finding the Fourth Proportional to 76,189.20, 105,150.48 and 45,991.80

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Solution

The fourth proportional to 76,189.20, 105,150.48 and 45,991.80 is: 63,474.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,189.20 : 105,150.48 = 45,991.80 : x
  2. Step 2: Convert to fraction form
    76,189.20/105,150.48 = 45,991.80/x
  3. Step 3: Cross multiply
    76,189.20x = 105,150.48 × 45,991.80
  4. Step 4: Simplify right side
    76,189.20x = 4,836,059,846.06
  5. Step 5: Solve for x
    x = 4,836,059,846.06/76,189.20
  6. Step 6: Final answer
    x = 63,474.35

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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.