Home / 78,998.06-118,497.21-31,634.48

Finding the Fourth Proportional to 78,998.06, 118,497.21 and 31,634.48

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Solution

The fourth proportional to 78,998.06, 118,497.21 and 31,634.48 is: 47,451.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,998.06 : 118,497.21 = 31,634.48 : x
  2. Step 2: Convert to fraction form
    78,998.06/118,497.21 = 31,634.48/x
  3. Step 3: Cross multiply
    78,998.06x = 118,497.21 × 31,634.48
  4. Step 4: Simplify right side
    78,998.06x = 3,748,597,619.80
  5. Step 5: Solve for x
    x = 3,748,597,619.80/78,998.06
  6. Step 6: Final answer
    x = 47,451.77

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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.