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Finding the Fourth Proportional to 89,863.70, 134,878.30 and 45,521.32

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Solution

The fourth proportional to 89,863.70, 134,878.30 and 45,521.32 is: 68,323.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,863.70 : 134,878.30 = 45,521.32 : x
  2. Step 2: Convert to fraction form
    89,863.70/134,878.30 = 45,521.32/x
  3. Step 3: Cross multiply
    89,863.70x = 134,878.30 × 45,521.32
  4. Step 4: Simplify right side
    89,863.70x = 6,139,838,255.36
  5. Step 5: Solve for x
    x = 6,139,838,255.36/89,863.70
  6. Step 6: Final answer
    x = 68,323.90

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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.