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Finding the Fourth Proportional to 172,604.86, 258,935.18 and 51,037.72

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Solution

The fourth proportional to 172,604.86, 258,935.18 and 51,037.72 is: 76,564.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,604.86 : 258,935.18 = 51,037.72 : x
  2. Step 2: Convert to fraction form
    172,604.86/258,935.18 = 51,037.72/x
  3. Step 3: Cross multiply
    172,604.86x = 258,935.18 × 51,037.72
  4. Step 4: Simplify right side
    172,604.86x = 13,215,460,312.46
  5. Step 5: Solve for x
    x = 13,215,460,312.46/172,604.86
  6. Step 6: Final answer
    x = 76,564.82

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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.