Home / 40,731.91-61,107.41-12,650.53

Finding the Fourth Proportional to 40,731.91, 61,107.41 and 12,650.53

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Solution

The fourth proportional to 40,731.91, 61,107.41 and 12,650.53 is: 18,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,731.91 : 61,107.41 = 12,650.53 : x
  2. Step 2: Convert to fraction form
    40,731.91/61,107.41 = 12,650.53/x
  3. Step 3: Cross multiply
    40,731.91x = 61,107.41 × 12,650.53
  4. Step 4: Simplify right side
    40,731.91x = 773,041,060.17
  5. Step 5: Solve for x
    x = 773,041,060.17/40,731.91
  6. Step 6: Final answer
    x = 18,978.76

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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.