Home / 78,449.07-117,636.65-28,493.94

Finding the Fourth Proportional to 78,449.07, 117,636.65 and 28,493.94

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Solution

The fourth proportional to 78,449.07, 117,636.65 and 28,493.94 is: 42,727.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,449.07 : 117,636.65 = 28,493.94 : x
  2. Step 2: Convert to fraction form
    78,449.07/117,636.65 = 28,493.94/x
  3. Step 3: Cross multiply
    78,449.07x = 117,636.65 × 28,493.94
  4. Step 4: Simplify right side
    78,449.07x = 3,351,931,504.43
  5. Step 5: Solve for x
    x = 3,351,931,504.43/78,449.07
  6. Step 6: Final answer
    x = 42,727.49

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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.