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Finding the Fourth Proportional to 72,632.02, 108,945.06 and 20,040.16

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Solution

The fourth proportional to 72,632.02, 108,945.06 and 20,040.16 is: 30,059.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,632.02 : 108,945.06 = 20,040.16 : x
  2. Step 2: Convert to fraction form
    72,632.02/108,945.06 = 20,040.16/x
  3. Step 3: Cross multiply
    72,632.02x = 108,945.06 × 20,040.16
  4. Step 4: Simplify right side
    72,632.02x = 2,183,276,433.61
  5. Step 5: Solve for x
    x = 2,183,276,433.61/72,632.02
  6. Step 6: Final answer
    x = 30,059.42

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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.