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Finding the Fourth Proportional to 172,587.95, 258,896.89 and 52,671.90

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Solution

The fourth proportional to 172,587.95, 258,896.89 and 52,671.90 is: 79,012.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,587.95 : 258,896.89 = 52,671.90 : x
  2. Step 2: Convert to fraction form
    172,587.95/258,896.89 = 52,671.90/x
  3. Step 3: Cross multiply
    172,587.95x = 258,896.89 × 52,671.90
  4. Step 4: Simplify right side
    172,587.95x = 13,636,592,137.09
  5. Step 5: Solve for x
    x = 13,636,592,137.09/172,587.95
  6. Step 6: Final answer
    x = 79,012.42

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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.