Home / 78,680.05-118,069.28-31,932.93

Finding the Fourth Proportional to 78,680.05, 118,069.28 and 31,932.93

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Solution

The fourth proportional to 78,680.05, 118,069.28 and 31,932.93 is: 47,919.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,680.05 : 118,069.28 = 31,932.93 : x
  2. Step 2: Convert to fraction form
    78,680.05/118,069.28 = 31,932.93/x
  3. Step 3: Cross multiply
    78,680.05x = 118,069.28 × 31,932.93
  4. Step 4: Simplify right side
    78,680.05x = 3,770,298,053.39
  5. Step 5: Solve for x
    x = 3,770,298,053.39/78,680.05
  6. Step 6: Final answer
    x = 47,919.37

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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.