Home / 77,026.50-115,559.22-21,622.50

Finding the Fourth Proportional to 77,026.50, 115,559.22 and 21,622.50

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Solution

The fourth proportional to 77,026.50, 115,559.22 and 21,622.50 is: 32,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,026.50 : 115,559.22 = 21,622.50 : x
  2. Step 2: Convert to fraction form
    77,026.50/115,559.22 = 21,622.50/x
  3. Step 3: Cross multiply
    77,026.50x = 115,559.22 × 21,622.50
  4. Step 4: Simplify right side
    77,026.50x = 2,498,679,234.45
  5. Step 5: Solve for x
    x = 2,498,679,234.45/77,026.50
  6. Step 6: Final answer
    x = 32,439.22

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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.