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Finding the Fourth Proportional to 63,342.48, 87,398.89 and 40,381

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Solution

The fourth proportional to 63,342.48, 87,398.89 and 40,381 is: 55,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,342.48 : 87,398.89 = 40,381 : x
  2. Step 2: Convert to fraction form
    63,342.48/87,398.89 = 40,381/x
  3. Step 3: Cross multiply
    63,342.48x = 87,398.89 × 40,381
  4. Step 4: Simplify right side
    63,342.48x = 3,529,254,577.09
  5. Step 5: Solve for x
    x = 3,529,254,577.09/63,342.48
  6. Step 6: Final answer
    x = 55,717.03

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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.