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Finding the Fourth Proportional to 67,290.08, 100,976.88 and 45,698.72

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Solution

The fourth proportional to 67,290.08, 100,976.88 and 45,698.72 is: 68,576.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,290.08 : 100,976.88 = 45,698.72 : x
  2. Step 2: Convert to fraction form
    67,290.08/100,976.88 = 45,698.72/x
  3. Step 3: Cross multiply
    67,290.08x = 100,976.88 × 45,698.72
  4. Step 4: Simplify right side
    67,290.08x = 4,614,514,165.59
  5. Step 5: Solve for x
    x = 4,614,514,165.59/67,290.08
  6. Step 6: Final answer
    x = 68,576.44

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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.