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Finding the Fourth Proportional to 64,665.44, 89,210.04 and 39,500

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Solution

The fourth proportional to 64,665.44, 89,210.04 and 39,500 is: 54,492.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,665.44 : 89,210.04 = 39,500 : x
  2. Step 2: Convert to fraction form
    64,665.44/89,210.04 = 39,500/x
  3. Step 3: Cross multiply
    64,665.44x = 89,210.04 × 39,500
  4. Step 4: Simplify right side
    64,665.44x = 3,523,796,580.00
  5. Step 5: Solve for x
    x = 3,523,796,580.00/64,665.44
  6. Step 6: Final answer
    x = 54,492.73

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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.