Home / 76,649.24-114,987.77-31,670.69

Finding the Fourth Proportional to 76,649.24, 114,987.77 and 31,670.69

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Solution

The fourth proportional to 76,649.24, 114,987.77 and 31,670.69 is: 47,511.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,649.24 : 114,987.77 = 31,670.69 : x
  2. Step 2: Convert to fraction form
    76,649.24/114,987.77 = 31,670.69/x
  3. Step 3: Cross multiply
    76,649.24x = 114,987.77 × 31,670.69
  4. Step 4: Simplify right side
    76,649.24x = 3,641,741,284.17
  5. Step 5: Solve for x
    x = 3,641,741,284.17/76,649.24
  6. Step 6: Final answer
    x = 47,511.78

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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.