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Finding the Fourth Proportional to 64,784.57, 89,401.49 and 36,103.60

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Solution

The fourth proportional to 64,784.57, 89,401.49 and 36,103.60 is: 49,822.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,784.57 : 89,401.49 = 36,103.60 : x
  2. Step 2: Convert to fraction form
    64,784.57/89,401.49 = 36,103.60/x
  3. Step 3: Cross multiply
    64,784.57x = 89,401.49 × 36,103.60
  4. Step 4: Simplify right side
    64,784.57x = 3,227,715,634.36
  5. Step 5: Solve for x
    x = 3,227,715,634.36/64,784.57
  6. Step 6: Final answer
    x = 49,822.29

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1.5x scale

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.