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Finding the Fourth Proportional to 63,671.14, 87,893.10 and 42,979.12

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Solution

The fourth proportional to 63,671.14, 87,893.10 and 42,979.12 is: 59,329.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,671.14 : 87,893.10 = 42,979.12 : x
  2. Step 2: Convert to fraction form
    63,671.14/87,893.10 = 42,979.12/x
  3. Step 3: Cross multiply
    63,671.14x = 87,893.10 × 42,979.12
  4. Step 4: Simplify right side
    63,671.14x = 3,777,568,092.07
  5. Step 5: Solve for x
    x = 3,777,568,092.07/63,671.14
  6. Step 6: Final answer
    x = 59,329.36

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1.5x scale

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.