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Finding the Fourth Proportional to 65,505.90, 98,173.80 and 30,370.80

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Solution

The fourth proportional to 65,505.90, 98,173.80 and 30,370.80 is: 45,516.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,505.90 : 98,173.80 = 30,370.80 : x
  2. Step 2: Convert to fraction form
    65,505.90/98,173.80 = 30,370.80/x
  3. Step 3: Cross multiply
    65,505.90x = 98,173.80 × 30,370.80
  4. Step 4: Simplify right side
    65,505.90x = 2,981,616,845.04
  5. Step 5: Solve for x
    x = 2,981,616,845.04/65,505.90
  6. Step 6: Final answer
    x = 45,516.77

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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.