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Finding the Fourth Proportional to 67,235.88, 100,853.72 and 20,488.76

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Solution

The fourth proportional to 67,235.88, 100,853.72 and 20,488.76 is: 30,733.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,235.88 : 100,853.72 = 20,488.76 : x
  2. Step 2: Convert to fraction form
    67,235.88/100,853.72 = 20,488.76/x
  3. Step 3: Cross multiply
    67,235.88x = 100,853.72 × 20,488.76
  4. Step 4: Simplify right side
    67,235.88x = 2,066,367,664.19
  5. Step 5: Solve for x
    x = 2,066,367,664.19/67,235.88
  6. Step 6: Final answer
    x = 30,733.11

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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.