Home / 78,291.41-117,432.86-48,311.36

Finding the Fourth Proportional to 78,291.41, 117,432.86 and 48,311.36

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Solution

The fourth proportional to 78,291.41, 117,432.86 and 48,311.36 is: 72,464.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,291.41 : 117,432.86 = 48,311.36 : x
  2. Step 2: Convert to fraction form
    78,291.41/117,432.86 = 48,311.36/x
  3. Step 3: Cross multiply
    78,291.41x = 117,432.86 × 48,311.36
  4. Step 4: Simplify right side
    78,291.41x = 5,673,341,524.85
  5. Step 5: Solve for x
    x = 5,673,341,524.85/78,291.41
  6. Step 6: Final answer
    x = 72,464.42

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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.