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Finding the Fourth Proportional to 51,652.49, 71,287.88 and 28,687.55

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Solution

The fourth proportional to 51,652.49, 71,287.88 and 28,687.55 is: 39,592.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,652.49 : 71,287.88 = 28,687.55 : x
  2. Step 2: Convert to fraction form
    51,652.49/71,287.88 = 28,687.55/x
  3. Step 3: Cross multiply
    51,652.49x = 71,287.88 × 28,687.55
  4. Step 4: Simplify right side
    51,652.49x = 2,045,074,122.02
  5. Step 5: Solve for x
    x = 2,045,074,122.02/51,652.49
  6. Step 6: Final answer
    x = 39,592.95

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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.