Home / 78,207.60-117,311.40-48,610.20

Finding the Fourth Proportional to 78,207.60, 117,311.40 and 48,610.20

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Solution

The fourth proportional to 78,207.60, 117,311.40 and 48,610.20 is: 72,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,207.60 : 117,311.40 = 48,610.20 : x
  2. Step 2: Convert to fraction form
    78,207.60/117,311.40 = 48,610.20/x
  3. Step 3: Cross multiply
    78,207.60x = 117,311.40 × 48,610.20
  4. Step 4: Simplify right side
    78,207.60x = 5,702,530,616.28
  5. Step 5: Solve for x
    x = 5,702,530,616.28/78,207.60
  6. Step 6: Final answer
    x = 72,915.30

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1.5x scale

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.