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Finding the Fourth Proportional to 64,915.83, 89,588.03 and 36,620.91

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Solution

The fourth proportional to 64,915.83, 89,588.03 and 36,620.91 is: 50,539.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,915.83 : 89,588.03 = 36,620.91 : x
  2. Step 2: Convert to fraction form
    64,915.83/89,588.03 = 36,620.91/x
  3. Step 3: Cross multiply
    64,915.83x = 89,588.03 × 36,620.91
  4. Step 4: Simplify right side
    64,915.83x = 3,280,795,000.60
  5. Step 5: Solve for x
    x = 3,280,795,000.60/64,915.83
  6. Step 6: Final answer
    x = 50,539.21

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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.