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Finding the Fourth Proportional to 171,690.10, 257,531.10 and 47,031.10

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Solution

The fourth proportional to 171,690.10, 257,531.10 and 47,031.10 is: 70,545.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,690.10 : 257,531.10 = 47,031.10 : x
  2. Step 2: Convert to fraction form
    171,690.10/257,531.10 = 47,031.10/x
  3. Step 3: Cross multiply
    171,690.10x = 257,531.10 × 47,031.10
  4. Step 4: Simplify right side
    171,690.10x = 12,111,970,917.21
  5. Step 5: Solve for x
    x = 12,111,970,917.21/171,690.10
  6. Step 6: Final answer
    x = 70,545.54

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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.