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Finding the Fourth Proportional to 57,706.22, 79,662.75 and 45,731.18

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Solution

The fourth proportional to 57,706.22, 79,662.75 and 45,731.18 is: 63,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,706.22 : 79,662.75 = 45,731.18 : x
  2. Step 2: Convert to fraction form
    57,706.22/79,662.75 = 45,731.18/x
  3. Step 3: Cross multiply
    57,706.22x = 79,662.75 × 45,731.18
  4. Step 4: Simplify right side
    57,706.22x = 3,643,071,559.55
  5. Step 5: Solve for x
    x = 3,643,071,559.55/57,706.22
  6. Step 6: Final answer
    x = 63,131.35

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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.