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Finding the Fourth Proportional to 64,694.48, 89,278 and 36,400.32

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Solution

The fourth proportional to 64,694.48, 89,278 and 36,400.32 is: 50,232.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,694.48 : 89,278 = 36,400.32 : x
  2. Step 2: Convert to fraction form
    64,694.48/89,278 = 36,400.32/x
  3. Step 3: Cross multiply
    64,694.48x = 89,278 × 36,400.32
  4. Step 4: Simplify right side
    64,694.48x = 3,249,747,768.96
  5. Step 5: Solve for x
    x = 3,249,747,768.96/64,694.48
  6. Step 6: Final answer
    x = 50,232.23

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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.