Home / 78,464.40-117,594.20-36,339.60

Finding the Fourth Proportional to 78,464.40, 117,594.20 and 36,339.60

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Solution

The fourth proportional to 78,464.40, 117,594.20 and 36,339.60 is: 54,461.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,464.40 : 117,594.20 = 36,339.60 : x
  2. Step 2: Convert to fraction form
    78,464.40/117,594.20 = 36,339.60/x
  3. Step 3: Cross multiply
    78,464.40x = 117,594.20 × 36,339.60
  4. Step 4: Simplify right side
    78,464.40x = 4,273,326,190.32
  5. Step 5: Solve for x
    x = 4,273,326,190.32/78,464.40
  6. Step 6: Final answer
    x = 54,461.97

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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.