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Finding the Fourth Proportional to 72,927.84, 109,410.22 and 20,337.33

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Solution

The fourth proportional to 72,927.84, 109,410.22 and 20,337.33 is: 30,511.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,927.84 : 109,410.22 = 20,337.33 : x
  2. Step 2: Convert to fraction form
    72,927.84/109,410.22 = 20,337.33/x
  3. Step 3: Cross multiply
    72,927.84x = 109,410.22 × 20,337.33
  4. Step 4: Simplify right side
    72,927.84x = 2,225,111,512.59
  5. Step 5: Solve for x
    x = 2,225,111,512.59/72,927.84
  6. Step 6: Final answer
    x = 30,511.14

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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.