Home / 80,946.21-121,418.91-21,777.06

Finding the Fourth Proportional to 80,946.21, 121,418.91 and 21,777.06

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Solution

The fourth proportional to 80,946.21, 121,418.91 and 21,777.06 is: 32,665.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,946.21 : 121,418.91 = 21,777.06 : x
  2. Step 2: Convert to fraction form
    80,946.21/121,418.91 = 21,777.06/x
  3. Step 3: Cross multiply
    80,946.21x = 121,418.91 × 21,777.06
  4. Step 4: Simplify right side
    80,946.21x = 2,644,146,888.20
  5. Step 5: Solve for x
    x = 2,644,146,888.20/80,946.21
  6. Step 6: Final answer
    x = 32,665.48

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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.