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Finding the Fourth Proportional to 64,979.62, 89,672.01 and 35,171.62

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Solution

The fourth proportional to 64,979.62, 89,672.01 and 35,171.62 is: 48,536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,979.62 : 89,672.01 = 35,171.62 : x
  2. Step 2: Convert to fraction form
    64,979.62/89,672.01 = 35,171.62/x
  3. Step 3: Cross multiply
    64,979.62x = 89,672.01 × 35,171.62
  4. Step 4: Simplify right side
    64,979.62x = 3,153,909,860.36
  5. Step 5: Solve for x
    x = 3,153,909,860.36/64,979.62
  6. Step 6: Final answer
    x = 48,536.91

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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.