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Finding the Fourth Proportional to 64,979.52, 89,671.77 and 35,171.52

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Solution

The fourth proportional to 64,979.52, 89,671.77 and 35,171.52 is: 48,536.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,979.52 : 89,671.77 = 35,171.52 : x
  2. Step 2: Convert to fraction form
    64,979.52/89,671.77 = 35,171.52/x
  3. Step 3: Cross multiply
    64,979.52x = 89,671.77 × 35,171.52
  4. Step 4: Simplify right side
    64,979.52x = 3,153,892,451.99
  5. Step 5: Solve for x
    x = 3,153,892,451.99/64,979.52
  6. Step 6: Final answer
    x = 48,536.72

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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.