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Finding the Fourth Proportional to 73,016.40, 109,443.60 and 28,628.40

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Solution

The fourth proportional to 73,016.40, 109,443.60 and 28,628.40 is: 42,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,016.40 : 109,443.60 = 28,628.40 : x
  2. Step 2: Convert to fraction form
    73,016.40/109,443.60 = 28,628.40/x
  3. Step 3: Cross multiply
    73,016.40x = 109,443.60 × 28,628.40
  4. Step 4: Simplify right side
    73,016.40x = 3,133,195,158.24
  5. Step 5: Solve for x
    x = 3,133,195,158.24/73,016.40
  6. Step 6: Final answer
    x = 42,910.84

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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.