Home / 76,622.20-114,933.30-21,218.20

Finding the Fourth Proportional to 76,622.20, 114,933.30 and 21,218.20

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Solution

The fourth proportional to 76,622.20, 114,933.30 and 21,218.20 is: 31,827.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,622.20 : 114,933.30 = 21,218.20 : x
  2. Step 2: Convert to fraction form
    76,622.20/114,933.30 = 21,218.20/x
  3. Step 3: Cross multiply
    76,622.20x = 114,933.30 × 21,218.20
  4. Step 4: Simplify right side
    76,622.20x = 2,438,677,746.06
  5. Step 5: Solve for x
    x = 2,438,677,746.06/76,622.20
  6. Step 6: Final answer
    x = 31,827.30

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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.