Home / 81,084.08-121,576.44-28,499.60

Finding the Fourth Proportional to 81,084.08, 121,576.44 and 28,499.60

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Solution

The fourth proportional to 81,084.08, 121,576.44 and 28,499.60 is: 42,731.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,084.08 : 121,576.44 = 28,499.60 : x
  2. Step 2: Convert to fraction form
    81,084.08/121,576.44 = 28,499.60/x
  3. Step 3: Cross multiply
    81,084.08x = 121,576.44 × 28,499.60
  4. Step 4: Simplify right side
    81,084.08x = 3,464,879,909.42
  5. Step 5: Solve for x
    x = 3,464,879,909.42/81,084.08
  6. Step 6: Final answer
    x = 42,731.94

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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.