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Finding the Fourth Proportional to 77,063.38, 115,595.07 and 21,659.38

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Solution

The fourth proportional to 77,063.38, 115,595.07 and 21,659.38 is: 32,489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,063.38 : 115,595.07 = 21,659.38 : x
  2. Step 2: Convert to fraction form
    77,063.38/115,595.07 = 21,659.38/x
  3. Step 3: Cross multiply
    77,063.38x = 115,595.07 × 21,659.38
  4. Step 4: Simplify right side
    77,063.38x = 2,503,716,860.98
  5. Step 5: Solve for x
    x = 2,503,716,860.98/77,063.38
  6. Step 6: Final answer
    x = 32,489.06

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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.