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Finding the Fourth Proportional to 72,927.75, 109,410.09 and 20,337.23

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Solution

The fourth proportional to 72,927.75, 109,410.09 and 20,337.23 is: 30,511.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,927.75 : 109,410.09 = 20,337.23 : x
  2. Step 2: Convert to fraction form
    72,927.75/109,410.09 = 20,337.23/x
  3. Step 3: Cross multiply
    72,927.75x = 109,410.09 × 20,337.23
  4. Step 4: Simplify right side
    72,927.75x = 2,225,098,438.18
  5. Step 5: Solve for x
    x = 2,225,098,438.18/72,927.75
  6. Step 6: Final answer
    x = 30,511.00

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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.