Home / 115,026.75-172,540.17-31,920.75

Finding the Fourth Proportional to 115,026.75, 172,540.17 and 31,920.75

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Solution

The fourth proportional to 115,026.75, 172,540.17 and 31,920.75 is: 47,881.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,026.75 : 172,540.17 = 31,920.75 : x
  2. Step 2: Convert to fraction form
    115,026.75/172,540.17 = 31,920.75/x
  3. Step 3: Cross multiply
    115,026.75x = 172,540.17 × 31,920.75
  4. Step 4: Simplify right side
    115,026.75x = 5,507,611,631.53
  5. Step 5: Solve for x
    x = 5,507,611,631.53/115,026.75
  6. Step 6: Final answer
    x = 47,881.14

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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.