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Finding the Fourth Proportional to 98,649.60, 147,974.40 and 36,344.40

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Solution

The fourth proportional to 98,649.60, 147,974.40 and 36,344.40 is: 54,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,649.60 : 147,974.40 = 36,344.40 : x
  2. Step 2: Convert to fraction form
    98,649.60/147,974.40 = 36,344.40/x
  3. Step 3: Cross multiply
    98,649.60x = 147,974.40 × 36,344.40
  4. Step 4: Simplify right side
    98,649.60x = 5,378,040,783.36
  5. Step 5: Solve for x
    x = 5,378,040,783.36/98,649.60
  6. Step 6: Final answer
    x = 54,516.60

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Similar ratio
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1.5x scale

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.