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Finding the Fourth Proportional to 77,061.27, 115,591.90 and 21,657.27

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Solution

The fourth proportional to 77,061.27, 115,591.90 and 21,657.27 is: 32,485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,061.27 : 115,591.90 = 21,657.27 : x
  2. Step 2: Convert to fraction form
    77,061.27/115,591.90 = 21,657.27/x
  3. Step 3: Cross multiply
    77,061.27x = 115,591.90 × 21,657.27
  4. Step 4: Simplify right side
    77,061.27x = 2,503,404,410.15
  5. Step 5: Solve for x
    x = 2,503,404,410.15/77,061.27
  6. Step 6: Final answer
    x = 32,485.90

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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.