Home / 78,178.79-117,263.49-48,198.75

Finding the Fourth Proportional to 78,178.79, 117,263.49 and 48,198.75

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Solution

The fourth proportional to 78,178.79, 117,263.49 and 48,198.75 is: 72,295.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,178.79 : 117,263.49 = 48,198.75 : x
  2. Step 2: Convert to fraction form
    78,178.79/117,263.49 = 48,198.75/x
  3. Step 3: Cross multiply
    78,178.79x = 117,263.49 × 48,198.75
  4. Step 4: Simplify right side
    78,178.79x = 5,651,953,638.64
  5. Step 5: Solve for x
    x = 5,651,953,638.64/78,178.79
  6. Step 6: Final answer
    x = 72,295.24

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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.