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Finding the Fourth Proportional to 64,389, 96,573.12 and 17,630.94

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Solution

The fourth proportional to 64,389, 96,573.12 and 17,630.94 is: 26,443.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,389 : 96,573.12 = 17,630.94 : x
  2. Step 2: Convert to fraction form
    64,389/96,573.12 = 17,630.94/x
  3. Step 3: Cross multiply
    64,389x = 96,573.12 × 17,630.94
  4. Step 4: Simplify right side
    64,389x = 1,702,674,884.33
  5. Step 5: Solve for x
    x = 1,702,674,884.33/64,389
  6. Step 6: Final answer
    x = 26,443.57

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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.