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Finding the Fourth Proportional to 36,779.40, 55,226.70 and 21,227.40

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Solution

The fourth proportional to 36,779.40, 55,226.70 and 21,227.40 is: 31,874.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,779.40 : 55,226.70 = 21,227.40 : x
  2. Step 2: Convert to fraction form
    36,779.40/55,226.70 = 21,227.40/x
  3. Step 3: Cross multiply
    36,779.40x = 55,226.70 × 21,227.40
  4. Step 4: Simplify right side
    36,779.40x = 1,172,319,251.58
  5. Step 5: Solve for x
    x = 1,172,319,251.58/36,779.40
  6. Step 6: Final answer
    x = 31,874.34

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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.