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Finding the Fourth Proportional to 64,535.25, 89,020.04 and 40,620.41

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Solution

The fourth proportional to 64,535.25, 89,020.04 and 40,620.41 is: 56,031.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,535.25 : 89,020.04 = 40,620.41 : x
  2. Step 2: Convert to fraction form
    64,535.25/89,020.04 = 40,620.41/x
  3. Step 3: Cross multiply
    64,535.25x = 89,020.04 × 40,620.41
  4. Step 4: Simplify right side
    64,535.25x = 3,616,029,874.81
  5. Step 5: Solve for x
    x = 3,616,029,874.81/64,535.25
  6. Step 6: Final answer
    x = 56,031.86

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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.