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Finding the Fourth Proportional to 51,535.88, 71,103.35 and 28,871.80

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Solution

The fourth proportional to 51,535.88, 71,103.35 and 28,871.80 is: 39,834.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,535.88 : 71,103.35 = 28,871.80 : x
  2. Step 2: Convert to fraction form
    51,535.88/71,103.35 = 28,871.80/x
  3. Step 3: Cross multiply
    51,535.88x = 71,103.35 × 28,871.80
  4. Step 4: Simplify right side
    51,535.88x = 2,052,881,700.53
  5. Step 5: Solve for x
    x = 2,052,881,700.53/51,535.88
  6. Step 6: Final answer
    x = 39,834.03

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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.