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Finding the Fourth Proportional to 40,698.46, 61,044.22 and 12,617.88

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Solution

The fourth proportional to 40,698.46, 61,044.22 and 12,617.88 is: 18,925.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,698.46 : 61,044.22 = 12,617.88 : x
  2. Step 2: Convert to fraction form
    40,698.46/61,044.22 = 12,617.88/x
  3. Step 3: Cross multiply
    40,698.46x = 61,044.22 × 12,617.88
  4. Step 4: Simplify right side
    40,698.46x = 770,248,642.65
  5. Step 5: Solve for x
    x = 770,248,642.65/40,698.46
  6. Step 6: Final answer
    x = 18,925.74

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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.