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Finding the Fourth Proportional to 57,032.40, 85,488.12 and 21,956.88

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Solution

The fourth proportional to 57,032.40, 85,488.12 and 21,956.88 is: 32,912.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,032.40 : 85,488.12 = 21,956.88 : x
  2. Step 2: Convert to fraction form
    57,032.40/85,488.12 = 21,956.88/x
  3. Step 3: Cross multiply
    57,032.40x = 85,488.12 × 21,956.88
  4. Step 4: Simplify right side
    57,032.40x = 1,877,052,392.27
  5. Step 5: Solve for x
    x = 1,877,052,392.27/57,032.40
  6. Step 6: Final answer
    x = 32,912.04

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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.