Home / 77,781.15-116,690.22-25,190.55

Finding the Fourth Proportional to 77,781.15, 116,690.22 and 25,190.55

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Solution

The fourth proportional to 77,781.15, 116,690.22 and 25,190.55 is: 37,791.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,781.15 : 116,690.22 = 25,190.55 : x
  2. Step 2: Convert to fraction form
    77,781.15/116,690.22 = 25,190.55/x
  3. Step 3: Cross multiply
    77,781.15x = 116,690.22 × 25,190.55
  4. Step 4: Simplify right side
    77,781.15x = 2,939,490,821.42
  5. Step 5: Solve for x
    x = 2,939,490,821.42/77,781.15
  6. Step 6: Final answer
    x = 37,791.81

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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.