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Finding the Fourth Proportional to 64,979.25, 89,671.64 and 35,171.25

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Solution

The fourth proportional to 64,979.25, 89,671.64 and 35,171.25 is: 48,536.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,979.25 : 89,671.64 = 35,171.25 : x
  2. Step 2: Convert to fraction form
    64,979.25/89,671.64 = 35,171.25/x
  3. Step 3: Cross multiply
    64,979.25x = 89,671.64 × 35,171.25
  4. Step 4: Simplify right side
    64,979.25x = 3,153,863,492.49
  5. Step 5: Solve for x
    x = 3,153,863,492.49/64,979.25
  6. Step 6: Final answer
    x = 48,536.47

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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.