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Finding the Fourth Proportional to 172,689, 259,048.17 and 48,030

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Solution

The fourth proportional to 172,689, 259,048.17 and 48,030 is: 72,049.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,689 : 259,048.17 = 48,030 : x
  2. Step 2: Convert to fraction form
    172,689/259,048.17 = 48,030/x
  3. Step 3: Cross multiply
    172,689x = 259,048.17 × 48,030
  4. Step 4: Simplify right side
    172,689x = 12,442,083,605.10
  5. Step 5: Solve for x
    x = 12,442,083,605.10/172,689
  6. Step 6: Final answer
    x = 72,049.08

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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.