Home / 78,449.57-117,637.39-28,494.44

Finding the Fourth Proportional to 78,449.57, 117,637.39 and 28,494.44

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Solution

The fourth proportional to 78,449.57, 117,637.39 and 28,494.44 is: 42,728.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,449.57 : 117,637.39 = 28,494.44 : x
  2. Step 2: Convert to fraction form
    78,449.57/117,637.39 = 28,494.44/x
  3. Step 3: Cross multiply
    78,449.57x = 117,637.39 × 28,494.44
  4. Step 4: Simplify right side
    78,449.57x = 3,352,011,551.11
  5. Step 5: Solve for x
    x = 3,352,011,551.11/78,449.57
  6. Step 6: Final answer
    x = 42,728.23

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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.