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Finding the Fourth Proportional to 37,710.48, 51,921.20 and 28,729.20

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Solution

The fourth proportional to 37,710.48, 51,921.20 and 28,729.20 is: 39,555.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,710.48 : 51,921.20 = 28,729.20 : x
  2. Step 2: Convert to fraction form
    37,710.48/51,921.20 = 28,729.20/x
  3. Step 3: Cross multiply
    37,710.48x = 51,921.20 × 28,729.20
  4. Step 4: Simplify right side
    37,710.48x = 1,491,654,539.04
  5. Step 5: Solve for x
    x = 1,491,654,539.04/37,710.48
  6. Step 6: Final answer
    x = 39,555.44

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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.