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Finding the Fourth Proportional to 42,468.84, 63,703.29 and 10,879.02

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Solution

The fourth proportional to 42,468.84, 63,703.29 and 10,879.02 is: 16,318.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,468.84 : 63,703.29 = 10,879.02 : x
  2. Step 2: Convert to fraction form
    42,468.84/63,703.29 = 10,879.02/x
  3. Step 3: Cross multiply
    42,468.84x = 63,703.29 × 10,879.02
  4. Step 4: Simplify right side
    42,468.84x = 693,029,365.98
  5. Step 5: Solve for x
    x = 693,029,365.98/42,468.84
  6. Step 6: Final answer
    x = 16,318.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.