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Finding the Fourth Proportional to 64,638.92, 96,960.50 and 17,887.88

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Solution

The fourth proportional to 64,638.92, 96,960.50 and 17,887.88 is: 26,832.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,638.92 : 96,960.50 = 17,887.88 : x
  2. Step 2: Convert to fraction form
    64,638.92/96,960.50 = 17,887.88/x
  3. Step 3: Cross multiply
    64,638.92x = 96,960.50 × 17,887.88
  4. Step 4: Simplify right side
    64,638.92x = 1,734,417,788.74
  5. Step 5: Solve for x
    x = 1,734,417,788.74/64,638.92
  6. Step 6: Final answer
    x = 26,832.41

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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.