Home / 40,990.82-61,515.42-31,640.18

Finding the Fourth Proportional to 40,990.82, 61,515.42 and 31,640.18

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Solution

The fourth proportional to 40,990.82, 61,515.42 and 31,640.18 is: 47,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,990.82 : 61,515.42 = 31,640.18 : x
  2. Step 2: Convert to fraction form
    40,990.82/61,515.42 = 31,640.18/x
  3. Step 3: Cross multiply
    40,990.82x = 61,515.42 × 31,640.18
  4. Step 4: Simplify right side
    40,990.82x = 1,946,358,961.58
  5. Step 5: Solve for x
    x = 1,946,358,961.58/40,990.82
  6. Step 6: Final answer
    x = 47,482.80

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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.