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Finding the Fourth Proportional to 52,121.88, 71,927.91 and 28,248.30

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Solution

The fourth proportional to 52,121.88, 71,927.91 and 28,248.30 is: 38,982.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,121.88 : 71,927.91 = 28,248.30 : x
  2. Step 2: Convert to fraction form
    52,121.88/71,927.91 = 28,248.30/x
  3. Step 3: Cross multiply
    52,121.88x = 71,927.91 × 28,248.30
  4. Step 4: Simplify right side
    52,121.88x = 2,031,841,180.05
  5. Step 5: Solve for x
    x = 2,031,841,180.05/52,121.88
  6. Step 6: Final answer
    x = 38,982.50

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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.