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Finding the Fourth Proportional to 103,638.67, 155,458.04 and 37,074.76

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Solution

The fourth proportional to 103,638.67, 155,458.04 and 37,074.76 is: 55,612.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.67 : 155,458.04 = 37,074.76 : x
  2. Step 2: Convert to fraction form
    103,638.67/155,458.04 = 37,074.76/x
  3. Step 3: Cross multiply
    103,638.67x = 155,458.04 × 37,074.76
  4. Step 4: Simplify right side
    103,638.67x = 5,763,569,523.07
  5. Step 5: Solve for x
    x = 5,763,569,523.07/103,638.67
  6. Step 6: Final answer
    x = 55,612.15

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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.