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Finding the Fourth Proportional to 45,133.22, 67,738.71 and 21,779.30

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Solution

The fourth proportional to 45,133.22, 67,738.71 and 21,779.30 is: 32,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,133.22 : 67,738.71 = 21,779.30 : x
  2. Step 2: Convert to fraction form
    45,133.22/67,738.71 = 21,779.30/x
  3. Step 3: Cross multiply
    45,133.22x = 67,738.71 × 21,779.30
  4. Step 4: Simplify right side
    45,133.22x = 1,475,301,686.70
  5. Step 5: Solve for x
    x = 1,475,301,686.70/45,133.22
  6. Step 6: Final answer
    x = 32,687.71

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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.