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Finding the Fourth Proportional to 72,874.44, 109,328.40 and 37,806.30

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Solution

The fourth proportional to 72,874.44, 109,328.40 and 37,806.30 is: 56,718.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,874.44 : 109,328.40 = 37,806.30 : x
  2. Step 2: Convert to fraction form
    72,874.44/109,328.40 = 37,806.30/x
  3. Step 3: Cross multiply
    72,874.44x = 109,328.40 × 37,806.30
  4. Step 4: Simplify right side
    72,874.44x = 4,133,302,288.92
  5. Step 5: Solve for x
    x = 4,133,302,288.92/72,874.44
  6. Step 6: Final answer
    x = 56,718.13

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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.