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Finding the Fourth Proportional to 79,993.28, 119,989.92 and 30,710.72

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Solution

The fourth proportional to 79,993.28, 119,989.92 and 30,710.72 is: 46,066.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,993.28 : 119,989.92 = 30,710.72 : x
  2. Step 2: Convert to fraction form
    79,993.28/119,989.92 = 30,710.72/x
  3. Step 3: Cross multiply
    79,993.28x = 119,989.92 × 30,710.72
  4. Step 4: Simplify right side
    79,993.28x = 3,684,976,835.94
  5. Step 5: Solve for x
    x = 3,684,976,835.94/79,993.28
  6. Step 6: Final answer
    x = 46,066.08

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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.