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Finding the Fourth Proportional to 84,011.60, 126,017.40 and 50,769.20

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Solution

The fourth proportional to 84,011.60, 126,017.40 and 50,769.20 is: 76,153.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,011.60 : 126,017.40 = 50,769.20 : x
  2. Step 2: Convert to fraction form
    84,011.60/126,017.40 = 50,769.20/x
  3. Step 3: Cross multiply
    84,011.60x = 126,017.40 × 50,769.20
  4. Step 4: Simplify right side
    84,011.60x = 6,397,802,584.08
  5. Step 5: Solve for x
    x = 6,397,802,584.08/84,011.60
  6. Step 6: Final answer
    x = 76,153.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.