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Finding the Fourth Proportional to 36,610.60, 54,980.70 and 28,310.80

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Solution

The fourth proportional to 36,610.60, 54,980.70 and 28,310.80 is: 42,516.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,610.60 : 54,980.70 = 28,310.80 : x
  2. Step 2: Convert to fraction form
    36,610.60/54,980.70 = 28,310.80/x
  3. Step 3: Cross multiply
    36,610.60x = 54,980.70 × 28,310.80
  4. Step 4: Simplify right side
    36,610.60x = 1,556,547,601.56
  5. Step 5: Solve for x
    x = 1,556,547,601.56/36,610.60
  6. Step 6: Final answer
    x = 42,516.31

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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.