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Finding the Fourth Proportional to 52,129.90, 71,934.90 and 29,467.72

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Solution

The fourth proportional to 52,129.90, 71,934.90 and 29,467.72 is: 40,662.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,129.90 : 71,934.90 = 29,467.72 : x
  2. Step 2: Convert to fraction form
    52,129.90/71,934.90 = 29,467.72/x
  3. Step 3: Cross multiply
    52,129.90x = 71,934.90 × 29,467.72
  4. Step 4: Simplify right side
    52,129.90x = 2,119,757,491.43
  5. Step 5: Solve for x
    x = 2,119,757,491.43/52,129.90
  6. Step 6: Final answer
    x = 40,662.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.