Home / 45,612.30-68,418.45-20,651.79

Finding the Fourth Proportional to 45,612.30, 68,418.45 and 20,651.79

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Solution

The fourth proportional to 45,612.30, 68,418.45 and 20,651.79 is: 30,977.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,612.30 : 68,418.45 = 20,651.79 : x
  2. Step 2: Convert to fraction form
    45,612.30/68,418.45 = 20,651.79/x
  3. Step 3: Cross multiply
    45,612.30x = 68,418.45 × 20,651.79
  4. Step 4: Simplify right side
    45,612.30x = 1,412,963,461.53
  5. Step 5: Solve for x
    x = 1,412,963,461.53/45,612.30
  6. Step 6: Final answer
    x = 30,977.69

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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.