Home / 42,074.46-63,121.41-12,491.64

Finding the Fourth Proportional to 42,074.46, 63,121.41 and 12,491.64

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Solution

The fourth proportional to 42,074.46, 63,121.41 and 12,491.64 is: 18,740.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,074.46 : 63,121.41 = 12,491.64 : x
  2. Step 2: Convert to fraction form
    42,074.46/63,121.41 = 12,491.64/x
  3. Step 3: Cross multiply
    42,074.46x = 63,121.41 × 12,491.64
  4. Step 4: Simplify right side
    42,074.46x = 788,489,930.01
  5. Step 5: Solve for x
    x = 788,489,930.01/42,074.46
  6. Step 6: Final answer
    x = 18,740.35

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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.