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Finding the Fourth Proportional to 57,324.65, 85,987.98 and 19,886.04

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Solution

The fourth proportional to 57,324.65, 85,987.98 and 19,886.04 is: 29,829.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,324.65 : 85,987.98 = 19,886.04 : x
  2. Step 2: Convert to fraction form
    57,324.65/85,987.98 = 19,886.04/x
  3. Step 3: Cross multiply
    57,324.65x = 85,987.98 × 19,886.04
  4. Step 4: Simplify right side
    57,324.65x = 1,709,960,409.80
  5. Step 5: Solve for x
    x = 1,709,960,409.80/57,324.65
  6. Step 6: Final answer
    x = 29,829.41

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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.