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Finding the Fourth Proportional to 103,427.05, 155,158.80 and 36,905.80

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Solution

The fourth proportional to 103,427.05, 155,158.80 and 36,905.80 is: 55,365.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,427.05 : 155,158.80 = 36,905.80 : x
  2. Step 2: Convert to fraction form
    103,427.05/155,158.80 = 36,905.80/x
  3. Step 3: Cross multiply
    103,427.05x = 155,158.80 × 36,905.80
  4. Step 4: Simplify right side
    103,427.05x = 5,726,259,641.04
  5. Step 5: Solve for x
    x = 5,726,259,641.04/103,427.05
  6. Step 6: Final answer
    x = 55,365.20

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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.