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Finding the Fourth Proportional to 172,612.63, 258,922.18 and 47,956.87

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Solution

The fourth proportional to 172,612.63, 258,922.18 and 47,956.87 is: 71,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,612.63 : 258,922.18 = 47,956.87 : x
  2. Step 2: Convert to fraction form
    172,612.63/258,922.18 = 47,956.87/x
  3. Step 3: Cross multiply
    172,612.63x = 258,922.18 × 47,956.87
  4. Step 4: Simplify right side
    172,612.63x = 12,417,096,031.77
  5. Step 5: Solve for x
    x = 12,417,096,031.77/172,612.63
  6. Step 6: Final answer
    x = 71,936.20

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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.