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Finding the Fourth Proportional to 64,663.44, 89,207.28 and 39,498

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Solution

The fourth proportional to 64,663.44, 89,207.28 and 39,498 is: 54,489.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,663.44 : 89,207.28 = 39,498 : x
  2. Step 2: Convert to fraction form
    64,663.44/89,207.28 = 39,498/x
  3. Step 3: Cross multiply
    64,663.44x = 89,207.28 × 39,498
  4. Step 4: Simplify right side
    64,663.44x = 3,523,509,145.44
  5. Step 5: Solve for x
    x = 3,523,509,145.44/64,663.44
  6. Step 6: Final answer
    x = 54,489.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.