Home / 75,941.23-113,911.90-19,781.20

Finding the Fourth Proportional to 75,941.23, 113,911.90 and 19,781.20

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Solution

The fourth proportional to 75,941.23, 113,911.90 and 19,781.20 is: 29,671.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,941.23 : 113,911.90 = 19,781.20 : x
  2. Step 2: Convert to fraction form
    75,941.23/113,911.90 = 19,781.20/x
  3. Step 3: Cross multiply
    75,941.23x = 113,911.90 × 19,781.20
  4. Step 4: Simplify right side
    75,941.23x = 2,253,314,076.28
  5. Step 5: Solve for x
    x = 2,253,314,076.28/75,941.23
  6. Step 6: Final answer
    x = 29,671.81

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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.