Home / 76,727.20-115,090.80-67,914.40

Finding the Fourth Proportional to 76,727.20, 115,090.80 and 67,914.40

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Solution

The fourth proportional to 76,727.20, 115,090.80 and 67,914.40 is: 101,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,727.20 : 115,090.80 = 67,914.40 : x
  2. Step 2: Convert to fraction form
    76,727.20/115,090.80 = 67,914.40/x
  3. Step 3: Cross multiply
    76,727.20x = 115,090.80 × 67,914.40
  4. Step 4: Simplify right side
    76,727.20x = 7,816,322,627.52
  5. Step 5: Solve for x
    x = 7,816,322,627.52/76,727.20
  6. Step 6: Final answer
    x = 101,871.60

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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.