Home / 76,967.20-115,450.80-72,301.60

Finding the Fourth Proportional to 76,967.20, 115,450.80 and 72,301.60

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Solution

The fourth proportional to 76,967.20, 115,450.80 and 72,301.60 is: 108,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,967.20 : 115,450.80 = 72,301.60 : x
  2. Step 2: Convert to fraction form
    76,967.20/115,450.80 = 72,301.60/x
  3. Step 3: Cross multiply
    76,967.20x = 115,450.80 × 72,301.60
  4. Step 4: Simplify right side
    76,967.20x = 8,347,277,561.28
  5. Step 5: Solve for x
    x = 8,347,277,561.28/76,967.20
  6. Step 6: Final answer
    x = 108,452.40

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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.