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Finding the Fourth Proportional to 54,644.60, 81,966.90 and 38,898.20

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Solution

The fourth proportional to 54,644.60, 81,966.90 and 38,898.20 is: 58,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,644.60 : 81,966.90 = 38,898.20 : x
  2. Step 2: Convert to fraction form
    54,644.60/81,966.90 = 38,898.20/x
  3. Step 3: Cross multiply
    54,644.60x = 81,966.90 × 38,898.20
  4. Step 4: Simplify right side
    54,644.60x = 3,188,364,869.58
  5. Step 5: Solve for x
    x = 3,188,364,869.58/54,644.60
  6. Step 6: Final answer
    x = 58,347.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.