Home / 91,359.12-126,114.42-55,560.60

Finding the Fourth Proportional to 91,359.12, 126,114.42 and 55,560.60

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Solution

The fourth proportional to 91,359.12, 126,114.42 and 55,560.60 is: 76,697.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,359.12 : 126,114.42 = 55,560.60 : x
  2. Step 2: Convert to fraction form
    91,359.12/126,114.42 = 55,560.60/x
  3. Step 3: Cross multiply
    91,359.12x = 126,114.42 × 55,560.60
  4. Step 4: Simplify right side
    91,359.12x = 7,006,992,843.85
  5. Step 5: Solve for x
    x = 7,006,992,843.85/91,359.12
  6. Step 6: Final answer
    x = 76,697.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.