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Finding the Fourth Proportional to 80,387.84, 110,807.37 and 63,364.47

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Solution

The fourth proportional to 80,387.84, 110,807.37 and 63,364.47 is: 87,342.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,387.84 : 110,807.37 = 63,364.47 : x
  2. Step 2: Convert to fraction form
    80,387.84/110,807.37 = 63,364.47/x
  3. Step 3: Cross multiply
    80,387.84x = 110,807.37 × 63,364.47
  4. Step 4: Simplify right side
    80,387.84x = 7,021,250,272.14
  5. Step 5: Solve for x
    x = 7,021,250,272.14/80,387.84
  6. Step 6: Final answer
    x = 87,342.20

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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.