Home / 78,263.10-117,383.67-25,665.75

Finding the Fourth Proportional to 78,263.10, 117,383.67 and 25,665.75

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Solution

The fourth proportional to 78,263.10, 117,383.67 and 25,665.75 is: 38,495.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,263.10 : 117,383.67 = 25,665.75 : x
  2. Step 2: Convert to fraction form
    78,263.10/117,383.67 = 25,665.75/x
  3. Step 3: Cross multiply
    78,263.10x = 117,383.67 × 25,665.75
  4. Step 4: Simplify right side
    78,263.10x = 3,012,739,928.30
  5. Step 5: Solve for x
    x = 3,012,739,928.30/78,263.10
  6. Step 6: Final answer
    x = 38,495.02

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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.