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Finding the Fourth Proportional to 117,745.86, 162,490.05 and 64,031.46

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Solution

The fourth proportional to 117,745.86, 162,490.05 and 64,031.46 is: 88,363.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,745.86 : 162,490.05 = 64,031.46 : x
  2. Step 2: Convert to fraction form
    117,745.86/162,490.05 = 64,031.46/x
  3. Step 3: Cross multiply
    117,745.86x = 162,490.05 × 64,031.46
  4. Step 4: Simplify right side
    117,745.86x = 10,404,475,136.97
  5. Step 5: Solve for x
    x = 10,404,475,136.97/117,745.86
  6. Step 6: Final answer
    x = 88,363.83

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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.