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Finding the Fourth Proportional to 57,446.61, 86,156.61 and 21,911.91

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Solution

The fourth proportional to 57,446.61, 86,156.61 and 21,911.91 is: 32,862.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,446.61 : 86,156.61 = 21,911.91 : x
  2. Step 2: Convert to fraction form
    57,446.61/86,156.61 = 21,911.91/x
  3. Step 3: Cross multiply
    57,446.61x = 86,156.61 × 21,911.91
  4. Step 4: Simplify right side
    57,446.61x = 1,887,855,884.23
  5. Step 5: Solve for x
    x = 1,887,855,884.23/57,446.61
  6. Step 6: Final answer
    x = 32,862.79

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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.