Home / 77,341.62-115,782.78-42,174.66

Finding the Fourth Proportional to 77,341.62, 115,782.78 and 42,174.66

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Solution

The fourth proportional to 77,341.62, 115,782.78 and 42,174.66 is: 63,136.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,341.62 : 115,782.78 = 42,174.66 : x
  2. Step 2: Convert to fraction form
    77,341.62/115,782.78 = 42,174.66/x
  3. Step 3: Cross multiply
    77,341.62x = 115,782.78 × 42,174.66
  4. Step 4: Simplify right side
    77,341.62x = 4,883,099,380.35
  5. Step 5: Solve for x
    x = 4,883,099,380.35/77,341.62
  6. Step 6: Final answer
    x = 63,136.76

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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.