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Finding the Fourth Proportional to 115,121.25, 172,780.29 and 45,049.77

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Solution

The fourth proportional to 115,121.25, 172,780.29 and 45,049.77 is: 67,613.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,121.25 : 172,780.29 = 45,049.77 : x
  2. Step 2: Convert to fraction form
    115,121.25/172,780.29 = 45,049.77/x
  3. Step 3: Cross multiply
    115,121.25x = 172,780.29 × 45,049.77
  4. Step 4: Simplify right side
    115,121.25x = 7,783,712,325.03
  5. Step 5: Solve for x
    x = 7,783,712,325.03/115,121.25
  6. Step 6: Final answer
    x = 67,613.17

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.