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Finding the Fourth Proportional to 72,929.98, 109,395.84 and 20,336.26

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Solution

The fourth proportional to 72,929.98, 109,395.84 and 20,336.26 is: 30,504.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,929.98 : 109,395.84 = 20,336.26 : x
  2. Step 2: Convert to fraction form
    72,929.98/109,395.84 = 20,336.26/x
  3. Step 3: Cross multiply
    72,929.98x = 109,395.84 × 20,336.26
  4. Step 4: Simplify right side
    72,929.98x = 2,224,702,245.16
  5. Step 5: Solve for x
    x = 2,224,702,245.16/72,929.98
  6. Step 6: Final answer
    x = 30,504.63

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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.