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Finding the Fourth Proportional to 67,279.80, 100,919.70 and 51,533.40

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Solution

The fourth proportional to 67,279.80, 100,919.70 and 51,533.40 is: 77,300.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,279.80 : 100,919.70 = 51,533.40 : x
  2. Step 2: Convert to fraction form
    67,279.80/100,919.70 = 51,533.40/x
  3. Step 3: Cross multiply
    67,279.80x = 100,919.70 × 51,533.40
  4. Step 4: Simplify right side
    67,279.80x = 5,200,735,267.98
  5. Step 5: Solve for x
    x = 5,200,735,267.98/67,279.80
  6. Step 6: Final answer
    x = 77,300.10

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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.