Home / 87,905.78-131,858.43-21,345.92

Finding the Fourth Proportional to 87,905.78, 131,858.43 and 21,345.92

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Solution

The fourth proportional to 87,905.78, 131,858.43 and 21,345.92 is: 32,018.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,905.78 : 131,858.43 = 21,345.92 : x
  2. Step 2: Convert to fraction form
    87,905.78/131,858.43 = 21,345.92/x
  3. Step 3: Cross multiply
    87,905.78x = 131,858.43 × 21,345.92
  4. Step 4: Simplify right side
    87,905.78x = 2,814,638,838.81
  5. Step 5: Solve for x
    x = 2,814,638,838.81/87,905.78
  6. Step 6: Final answer
    x = 32,018.82

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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.