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Finding the Fourth Proportional to 57,472.93, 86,217.50 and 21,931.75

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Solution

The fourth proportional to 57,472.93, 86,217.50 and 21,931.75 is: 32,900.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,472.93 : 86,217.50 = 21,931.75 : x
  2. Step 2: Convert to fraction form
    57,472.93/86,217.50 = 21,931.75/x
  3. Step 3: Cross multiply
    57,472.93x = 86,217.50 × 21,931.75
  4. Step 4: Simplify right side
    57,472.93x = 1,890,900,655.63
  5. Step 5: Solve for x
    x = 1,890,900,655.63/57,472.93
  6. Step 6: Final answer
    x = 32,900.72

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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.