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Finding the Fourth Proportional to 51,991.62, 71,748.49 and 28,118.30

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Solution

The fourth proportional to 51,991.62, 71,748.49 and 28,118.30 is: 38,803.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,991.62 : 71,748.49 = 28,118.30 : x
  2. Step 2: Convert to fraction form
    51,991.62/71,748.49 = 28,118.30/x
  3. Step 3: Cross multiply
    51,991.62x = 71,748.49 × 28,118.30
  4. Step 4: Simplify right side
    51,991.62x = 2,017,445,372.07
  5. Step 5: Solve for x
    x = 2,017,445,372.07/51,991.62
  6. Step 6: Final answer
    x = 38,803.28

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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.