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Finding the Fourth Proportional to 72,153.86, 108,244.97 and 22,225.46

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Solution

The fourth proportional to 72,153.86, 108,244.97 and 22,225.46 is: 33,342.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,153.86 : 108,244.97 = 22,225.46 : x
  2. Step 2: Convert to fraction form
    72,153.86/108,244.97 = 22,225.46/x
  3. Step 3: Cross multiply
    72,153.86x = 108,244.97 × 22,225.46
  4. Step 4: Simplify right side
    72,153.86x = 2,405,794,139.81
  5. Step 5: Solve for x
    x = 2,405,794,139.81/72,153.86
  6. Step 6: Final answer
    x = 33,342.56

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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.