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Finding the Fourth Proportional to 64,712.72, 89,303.37 and 36,418.43

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Solution

The fourth proportional to 64,712.72, 89,303.37 and 36,418.43 is: 50,257.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,712.72 : 89,303.37 = 36,418.43 : x
  2. Step 2: Convert to fraction form
    64,712.72/89,303.37 = 36,418.43/x
  3. Step 3: Cross multiply
    64,712.72x = 89,303.37 × 36,418.43
  4. Step 4: Simplify right side
    64,712.72x = 3,252,288,529.11
  5. Step 5: Solve for x
    x = 3,252,288,529.11/64,712.72
  6. Step 6: Final answer
    x = 50,257.33

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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.