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Finding the Fourth Proportional to 76,618.22, 114,927.35 and 21,214.22

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Solution

The fourth proportional to 76,618.22, 114,927.35 and 21,214.22 is: 31,821.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,618.22 : 114,927.35 = 21,214.22 : x
  2. Step 2: Convert to fraction form
    76,618.22/114,927.35 = 21,214.22/x
  3. Step 3: Cross multiply
    76,618.22x = 114,927.35 × 21,214.22
  4. Step 4: Simplify right side
    76,618.22x = 2,438,093,406.21
  5. Step 5: Solve for x
    x = 2,438,093,406.21/76,618.22
  6. Step 6: Final answer
    x = 31,821.33

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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.