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Finding the Fourth Proportional to 103,640.70, 155,461.05 and 37,086.04

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Solution

The fourth proportional to 103,640.70, 155,461.05 and 37,086.04 is: 55,629.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.70 : 155,461.05 = 37,086.04 : x
  2. Step 2: Convert to fraction form
    103,640.70/155,461.05 = 37,086.04/x
  3. Step 3: Cross multiply
    103,640.70x = 155,461.05 × 37,086.04
  4. Step 4: Simplify right side
    103,640.70x = 5,765,434,718.74
  5. Step 5: Solve for x
    x = 5,765,434,718.74/103,640.70
  6. Step 6: Final answer
    x = 55,629.06

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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.