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Finding the Fourth Proportional to 113,306.80, 169,954.80 and 38,419.60

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Solution

The fourth proportional to 113,306.80, 169,954.80 and 38,419.60 is: 57,627.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,306.80 : 169,954.80 = 38,419.60 : x
  2. Step 2: Convert to fraction form
    113,306.80/169,954.80 = 38,419.60/x
  3. Step 3: Cross multiply
    113,306.80x = 169,954.80 × 38,419.60
  4. Step 4: Simplify right side
    113,306.80x = 6,529,595,434.08
  5. Step 5: Solve for x
    x = 6,529,595,434.08/113,306.80
  6. Step 6: Final answer
    x = 57,627.57

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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.