Home / 77,026.20-115,539.30-21,622.20

Finding the Fourth Proportional to 77,026.20, 115,539.30 and 21,622.20

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Solution

The fourth proportional to 77,026.20, 115,539.30 and 21,622.20 is: 32,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,026.20 : 115,539.30 = 21,622.20 : x
  2. Step 2: Convert to fraction form
    77,026.20/115,539.30 = 21,622.20/x
  3. Step 3: Cross multiply
    77,026.20x = 115,539.30 × 21,622.20
  4. Step 4: Simplify right side
    77,026.20x = 2,498,213,852.46
  5. Step 5: Solve for x
    x = 2,498,213,852.46/77,026.20
  6. Step 6: Final answer
    x = 32,433.30

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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.