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Finding the Fourth Proportional to 117,745.76, 162,490.23 and 64,031.28

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Solution

The fourth proportional to 117,745.76, 162,490.23 and 64,031.28 is: 88,363.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,745.76 : 162,490.23 = 64,031.28 : x
  2. Step 2: Convert to fraction form
    117,745.76/162,490.23 = 64,031.28/x
  3. Step 3: Cross multiply
    117,745.76x = 162,490.23 × 64,031.28
  4. Step 4: Simplify right side
    117,745.76x = 10,404,457,414.39
  5. Step 5: Solve for x
    x = 10,404,457,414.39/117,745.76
  6. Step 6: Final answer
    x = 88,363.76

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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.