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Finding the Fourth Proportional to 51,636.30, 71,261.04 and 28,974.12

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Solution

The fourth proportional to 51,636.30, 71,261.04 and 28,974.12 is: 39,985.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,636.30 : 71,261.04 = 28,974.12 : x
  2. Step 2: Convert to fraction form
    51,636.30/71,261.04 = 28,974.12/x
  3. Step 3: Cross multiply
    51,636.30x = 71,261.04 × 28,974.12
  4. Step 4: Simplify right side
    51,636.30x = 2,064,725,924.28
  5. Step 5: Solve for x
    x = 2,064,725,924.28/51,636.30
  6. Step 6: Final answer
    x = 39,985.94

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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.