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Finding the Fourth Proportional to 80,406.93, 110,635.67 and 66,013.73

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Solution

The fourth proportional to 80,406.93, 110,635.67 and 66,013.73 is: 90,831.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,406.93 : 110,635.67 = 66,013.73 : x
  2. Step 2: Convert to fraction form
    80,406.93/110,635.67 = 66,013.73/x
  3. Step 3: Cross multiply
    80,406.93x = 110,635.67 × 66,013.73
  4. Step 4: Simplify right side
    80,406.93x = 7,303,473,896.81
  5. Step 5: Solve for x
    x = 7,303,473,896.81/80,406.93
  6. Step 6: Final answer
    x = 90,831.40

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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.