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Finding the Fourth Proportional to 64,850.93, 89,500.17 and 39,363.80

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Solution

The fourth proportional to 64,850.93, 89,500.17 and 39,363.80 is: 54,325.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,850.93 : 89,500.17 = 39,363.80 : x
  2. Step 2: Convert to fraction form
    64,850.93/89,500.17 = 39,363.80/x
  3. Step 3: Cross multiply
    64,850.93x = 89,500.17 × 39,363.80
  4. Step 4: Simplify right side
    64,850.93x = 3,523,066,411.55
  5. Step 5: Solve for x
    x = 3,523,066,411.55/64,850.93
  6. Step 6: Final answer
    x = 54,325.61

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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.