Home / 78,276.96-117,390.87-25,674.12

Finding the Fourth Proportional to 78,276.96, 117,390.87 and 25,674.12

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Solution

The fourth proportional to 78,276.96, 117,390.87 and 25,674.12 is: 38,503.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,276.96 : 117,390.87 = 25,674.12 : x
  2. Step 2: Convert to fraction form
    78,276.96/117,390.87 = 25,674.12/x
  3. Step 3: Cross multiply
    78,276.96x = 117,390.87 × 25,674.12
  4. Step 4: Simplify right side
    78,276.96x = 3,013,907,283.28
  5. Step 5: Solve for x
    x = 3,013,907,283.28/78,276.96
  6. Step 6: Final answer
    x = 38,503.12

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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.