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Finding the Fourth Proportional to 67,219.70, 100,829.55 and 63,939.20

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Solution

The fourth proportional to 67,219.70, 100,829.55 and 63,939.20 is: 95,908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,219.70 : 100,829.55 = 63,939.20 : x
  2. Step 2: Convert to fraction form
    67,219.70/100,829.55 = 63,939.20/x
  3. Step 3: Cross multiply
    67,219.70x = 100,829.55 × 63,939.20
  4. Step 4: Simplify right side
    67,219.70x = 6,446,960,763.36
  5. Step 5: Solve for x
    x = 6,446,960,763.36/67,219.70
  6. Step 6: Final answer
    x = 95,908.80

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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.