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Finding the Fourth Proportional to 51,611.65, 71,258.34 and 39,653.62

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Solution

The fourth proportional to 51,611.65, 71,258.34 and 39,653.62 is: 54,748.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,611.65 : 71,258.34 = 39,653.62 : x
  2. Step 2: Convert to fraction form
    51,611.65/71,258.34 = 39,653.62/x
  3. Step 3: Cross multiply
    51,611.65x = 71,258.34 × 39,653.62
  4. Step 4: Simplify right side
    51,611.65x = 2,825,651,136.19
  5. Step 5: Solve for x
    x = 2,825,651,136.19/51,611.65
  6. Step 6: Final answer
    x = 54,748.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.