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Finding the Fourth Proportional to 73,178.75, 109,809.64 and 28,836.64

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Solution

The fourth proportional to 73,178.75, 109,809.64 and 28,836.64 is: 43,271.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,178.75 : 109,809.64 = 28,836.64 : x
  2. Step 2: Convert to fraction form
    73,178.75/109,809.64 = 28,836.64/x
  3. Step 3: Cross multiply
    73,178.75x = 109,809.64 × 28,836.64
  4. Step 4: Simplify right side
    73,178.75x = 3,166,541,057.21
  5. Step 5: Solve for x
    x = 3,166,541,057.21/73,178.75
  6. Step 6: Final answer
    x = 43,271.32

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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.