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Finding the Fourth Proportional to 77,273.80, 115,910.70 and 21,869.80

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Solution

The fourth proportional to 77,273.80, 115,910.70 and 21,869.80 is: 32,804.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,273.80 : 115,910.70 = 21,869.80 : x
  2. Step 2: Convert to fraction form
    77,273.80/115,910.70 = 21,869.80/x
  3. Step 3: Cross multiply
    77,273.80x = 115,910.70 × 21,869.80
  4. Step 4: Simplify right side
    77,273.80x = 2,534,943,826.86
  5. Step 5: Solve for x
    x = 2,534,943,826.86/77,273.80
  6. Step 6: Final answer
    x = 32,804.70

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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.