Home / 78,889.04-108,867.48-43,078.40

Finding the Fourth Proportional to 78,889.04, 108,867.48 and 43,078.40

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Solution

The fourth proportional to 78,889.04, 108,867.48 and 43,078.40 is: 59,448.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889.04 : 108,867.48 = 43,078.40 : x
  2. Step 2: Convert to fraction form
    78,889.04/108,867.48 = 43,078.40/x
  3. Step 3: Cross multiply
    78,889.04x = 108,867.48 × 43,078.40
  4. Step 4: Simplify right side
    78,889.04x = 4,689,836,850.43
  5. Step 5: Solve for x
    x = 4,689,836,850.43/78,889.04
  6. Step 6: Final answer
    x = 59,448.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.