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Finding the Fourth Proportional to 84,529.68, 126,776.68 and 54,453.84

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Solution

The fourth proportional to 84,529.68, 126,776.68 and 54,453.84 is: 81,669.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,529.68 : 126,776.68 = 54,453.84 : x
  2. Step 2: Convert to fraction form
    84,529.68/126,776.68 = 54,453.84/x
  3. Step 3: Cross multiply
    84,529.68x = 126,776.68 × 54,453.84
  4. Step 4: Simplify right side
    84,529.68x = 6,903,477,048.45
  5. Step 5: Solve for x
    x = 6,903,477,048.45/84,529.68
  6. Step 6: Final answer
    x = 81,669.27

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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.