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Finding the Fourth Proportional to 84,500.28, 126,769.86 and 28,347.84

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Solution

The fourth proportional to 84,500.28, 126,769.86 and 28,347.84 is: 42,528.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,500.28 : 126,769.86 = 28,347.84 : x
  2. Step 2: Convert to fraction form
    84,500.28/126,769.86 = 28,347.84/x
  3. Step 3: Cross multiply
    84,500.28x = 126,769.86 × 28,347.84
  4. Step 4: Simplify right side
    84,500.28x = 3,593,651,708.10
  5. Step 5: Solve for x
    x = 3,593,651,708.10/84,500.28
  6. Step 6: Final answer
    x = 42,528.28

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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.