Home / 78,314.20-117,483.58-25,711.72

Finding the Fourth Proportional to 78,314.20, 117,483.58 and 25,711.72

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Solution

The fourth proportional to 78,314.20, 117,483.58 and 25,711.72 is: 38,571.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,314.20 : 117,483.58 = 25,711.72 : x
  2. Step 2: Convert to fraction form
    78,314.20/117,483.58 = 25,711.72/x
  3. Step 3: Cross multiply
    78,314.20x = 117,483.58 × 25,711.72
  4. Step 4: Simplify right side
    78,314.20x = 3,020,704,913.56
  5. Step 5: Solve for x
    x = 3,020,704,913.56/78,314.20
  6. Step 6: Final answer
    x = 38,571.61

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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.