Home / 78,209.28-117,322.12-25,622.87

Finding the Fourth Proportional to 78,209.28, 117,322.12 and 25,622.87

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Solution

The fourth proportional to 78,209.28, 117,322.12 and 25,622.87 is: 38,436.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,209.28 : 117,322.12 = 25,622.87 : x
  2. Step 2: Convert to fraction form
    78,209.28/117,322.12 = 25,622.87/x
  3. Step 3: Cross multiply
    78,209.28x = 117,322.12 × 25,622.87
  4. Step 4: Simplify right side
    78,209.28x = 3,006,128,874.30
  5. Step 5: Solve for x
    x = 3,006,128,874.30/78,209.28
  6. Step 6: Final answer
    x = 38,436.98

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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.